Please help me access my main account via the link, or restore password-based login

"We've just sent you a unique sign-in link to your email" I am NOT receiving the link, and there are 100% no blocks in the email - I don't understand the reason. I've been struggling for two days now — I can't access the boards with my students and check the assignments. AI bot writes standard recommendations, and its emails are delivered without any issues, but there's no link. My email is fine - no firewalls; everything is disabled . Why isn't there a link? How else can I get into my main education account?