Account & Sign-in

Your app account is your YUCTS forum (forum.yucts.com) account — the app and the forum share the same account. Features that require an account bring up the sign-in screen automatically. You can also get there from the person icon at the top left of Home → "Profile & settings" → "Account" → "Login to Forum".

The sign-in screen

At the top of the sign-in screen is a "Login / Register" switch. Below it, the "Or use a social account" area has three buttons:

Method	Description
Username and password	Enter "Username or email" and "Password", then tap "Login"
Sign in with Apple	Sign in with your Apple Account; the first time, a YUCTS account is created or linked
Sign in with Passkey	Sign in with Face ID / Touch ID (set up a passkey first — see below)
Continue with your YUCTS account	Sign in on forum.yucts.com's secure sign-in page with your forum username and password, a linked yucts.com account, or a social account. This only signs in to existing accounts — if you don't have one, use "Register"

Links to the "Terms of Service" and "Privacy Policy" appear below the buttons; by continuing, you agree to these terms and to follow the community guidelines.

Accounts with two-step verification

If your account has two-step verification turned on, Sign in with Apple and Passkey will ask you to sign in with your username and password instead.

Two-step verification

If your account has two-step verification enabled on the website, a "Verify" screen appears after you enter your password:

1. If you have more than one method, choose one under "Verification method" (depending on your account, for example an authenticator app or email).
2. Methods that send a code have "Resend verification code".
3. Enter the "Verification code" and tap "Verify and sign in".

Two-step verification can only be turned on and configured on the forum website; the app's "Account" section shows whether it's on or off.

Forgot password

Tap "Forgot password?" below the sign-in form → enter your "Email" → tap "Send reset link", then follow the instructions in the email.

Registering

Switch to "Register" on the sign-in screen:

1. Enter a username, email, password, and password confirmation.
2. Check the box agreeing to the Terms of Service and Privacy Policy (tap "View Terms of Service" or "View Privacy Policy" to read each one).
3. Tap "Create account". If something is still missing, the items are listed under "Before creating your account:"; a bot check appears when needed.

If registration fails, the app explains why in your interface language — for example, the username is already taken, or the email is already registered (you can sign in or reset your password with "Forgot password?").

Depending on the website's settings, after registering you may be signed in right away, see "A verification email was sent to…" (verify, then sign in), or see "Account created. You can sign in once an administrator approves it."

Passkey

A passkey lets you sign in with Face ID / Touch ID instead of a password.

Set up a passkey

1. After signing in, go to "Profile & settings" → "Account" → "Signed-in devices & passkeys".
2. On the "Quick sign-in with Passkey" card at the top, tap "Set up Passkey" and follow the system prompts.
3. When you see "Set up! You can sign in with Passkey next time", you're done.

Manage passkeys

• In the "Passkey" segment of the same page, you can see when each passkey was created and last used, and swipe left to "Delete" one.
• When you delete your last passkey, the app reminds you that you'll need to sign in with your password or Apple from then on. Keys stored in the system Passwords app must be deleted separately.

Profile and account settings

My Profile: tap the profile card at the top of "Profile & settings" to see stats such as messages, reaction score, trophies, best answers, likes and followers (shown to every signed-in member, not only Yucts Plus); "My Card" (a YUCTS membership card on its own page — see below); "Forum Info" (email, registration date, location, about, last activity); and "View profile on forum".

My Card: a membership-card-style card with a QR code for your public profile. Double-tap it (or tap "Flip") to switch between the card and the QR code; you can "Share Profile Link", "Copy Link", "Export card image" or "View Forum Profile". The card only shows information that is public on the forum (no email address or location), and what you share is the link to your public profile.

Account settings: open "Profile & settings" → "Account" → "Profile & notifications", or the item of the same name in the forum's top-right person menu (the page title is "Account settings"):

• Avatar: choose from Photos, take a photo, or remove your avatar.
• Personal fields: edit them, then tap "Save personal fields".
• Notification preferences: Receive announcement emails, Email me on new DMs, Push for new DMs, Show others' signatures, and Topics I posted / Topics I replied to ("Don't subscribe automatically" / "Subscribe (no email)" / "Subscribe and email me"), then tap "Save notification preferences".

Password, email, and privacy settings

Changing your password, email, two-step verification, and privacy settings is done on the forum website. The "Account" section has three items labeled "Website" — "Password & two-step verification", "Connected accounts", and "Privacy" — which open forum.yucts.com in the in-app browser (you may need to sign in again).

Phone verification

"Profile & settings" → "Account" → "Phone verification":

1. Enter your phone number in international (E.164) format; Taiwan's country code +886 is filled in by default.
2. Tap "Send code" (it becomes "Resend code" once sent).
3. Enter the 6-digit code and tap "Confirm".

When done, you'll see "Phone verified" with the verification time, and a verified badge appears next to your forum identity. To change numbers, tap "Verify another number".

Identity verification

"Profile & settings" → "Account" → "Identity verification":

1. Choose your "Country/Region" and "Document type" (depending on the country: national ID, passport, residence permit, driver's license, My Number card, Hong Kong ID, and so on).
2. Optionally fill in "Name on document (optional)".
3. Choose the "Document front" from Photos, and add "Document back (optional)" if needed.
4. Tap "Submit for review".

The status shows "Identity verified", "Under review, please wait", or "Not approved, you can resubmit" (with the reason). Document images are used only for manual identity review, stored in private storage, and never shown publicly.

Change username (Yucts Plus only)

Yucts Plus members can go to "Profile & settings" → "Account" → "Change username", enter a new name (some cases also require a reason for the change), and tap "Confirm change". If you see "Submitted, pending review", the change is waiting for staff approval. Non-Plus members don't see this item.

Signed-in devices

"Profile & settings" → "Account" → "Signed-in devices & passkeys" (page title "Active Sessions") has three segments:

Segment	Contents
App device	iPhones, iPads, and Macs signed in to the Yucts app. Each row shows the device model and OS version, city/region/country, and "Last Activity"; the current device is marked "This Device". Swipe left to "Revoke" other devices; for this device, use "Sign out" instead.
Forum sign-in	Browsers that stayed signed in on the forum.yucts.com website, with sign-in time and expiry date. Swipe left to "Revoke".
Passkey	See "Manage passkeys" above.

Signing out

At the bottom of "Profile & settings", tap "Sign out" and confirm "Sign out of your Yucts forum account?".

• Trips and bookmarks on this device are kept, and iCloud (Apple Account) sync isn't affected.
• Signing out clears this device's sign-in credentials, forum and search history, and the account data used by widgets and the share extension, and stops remote push notifications on this device.

Deleting your account

In the "Danger zone" section at the bottom of "Profile & settings" → "Delete Account":

1. Review what "Permanently delete account" affects: all topics and posts you've published, private messages and conversations, bookmarks, follows and notification history, and your profile and avatar.
2. Optionally fill in "Reason for leaving (optional)".
3. Type your username to confirm, as prompted.
4. Tap "Permanently delete my account".

You'll then see "Account deletion scheduled" with the planned deletion date, and you'll be signed out automatically. Signing in again before that date cancels the deletion.

Before you delete your account

• Push devices, push preferences, app sign-in records, AI conversation history, and in-app purchase entitlement records are deleted from the server immediately; they won't come back even if you later cancel the deletion.
• Deleting your account does not delete the travel data on this device or in your iCloud.
• Deleting your account does not cancel your Apple subscription. Cancel it yourself in the App Store's subscription management (see Yucts Plus Subscription).