an invite code box on the sign-up page, read the line above it
The invite code field is often optional, so read the label above the box before pasting in a string someone sent you.
If the label above the invite code box says optional, leaving it blank still lets you sign up, so skip codes copied from group chats.
Key points
Read the label above the box
The field is marked optional, skippable, or required right above or beside it. Those two wordings lead to different next steps, so read that line first.
Compare length and character set
An invite code is normally a fixed-length run of letters and digits. A code with spaces, Chinese characters, or emoji is not in the official format.
Trace where the code came from
Only trust the code shown on the download or sign-up page you opened yourself. A code in a forwarded screenshot cannot be traced back to any account.
Clear the box and continue
Empty the field and press continue. If the page moves on as usual, the field was never blocking you, so there is no need to hunt for a code elsewhere.
Common questions
Can I change the invite code after I submit it?
Most sign-up flows close that field once submitted, so checking the label and the code format beforehand saves a support ticket later.
Why do people send me invite codes of different lengths?
Each account generates its own code, but the length and character set should match. Codes that vary in length or contain symbols are likely assembled by hand.
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Sources：the optional or required label above the invite code box on the sign-up page · Open the sign-up page, read the label directly above the invite code box, then compare each character of the code you were given against the format the box accepts. · Checked on 2026-10-08
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