I did not receive my sign-in email
Ask for a new link first. A code lasts thirty minutes; most "it never arrived" cases are a link requested an hour earlier.
Check spam. Look for the sender rather than the subject.
Check the address. One letter wrong and the email is delivered to somebody else.
A corporate mailbox sometimes quarantines a first-time sender. Ask your IT to allow our sending domain, or use a personal address to get in once.
A team invitation older than seven days is dead: your leader resends it from "Members".
Two failed attempts? Write to us with the exact address you are typing.