Wrong password — or is it?
A failed sign-in with the right password usually means the account was created with a different method. An account registered through Google sign-in has no password to type; use the same button you registered with.Activation links
Where email confirmation is enabled, the activation link is single-use and expires. An expired link fails quietly — request a fresh one from the sign-in page rather than retrying the old email.Sessions
Signing in issues a session cookie scoped toplatform.nushir.com. Browser
extensions that strip cookies, and privacy modes that block them, produce the
classic symptom: a successful sign-in that immediately bounces back to the
login page. Allow cookies for the domain and sign in again.