MartialnoteThe sign-in link no longer works. Why?
A sign-in link expires 15 minutes after it is sent and works only once. The message "This link is no longer valid" appears if it expired or was already used (for example opened on another device).
Tap Start over and request a new link.
See also
Didn't find your answer?
Write to bonjour@martialnote.com from your account's address, saying which screen is involved and the message shown. Support is by email only, with no guaranteed response time. Never send information about your students.