SightSmash uses passwordless sign-in. Enter your email on the sign-in screen, complete the security check, and open the link sent to that address. The link expires after 15 minutes and should be used only by the person who requested it.
There is no password-reset workflow because SightSmash does not store a SightSmash password. If the email does not arrive, check spam, confirm the address, wait briefly, and request one new link. Contact support if delivery continues to fail.