Unsuccessful log in through an project invitation even though the email and password are correct

I am trying to log in at gitlab.com through an invitation link for a project, but I am not able to do so because I have inputted the wrong username/email and password (said the captcha). However, I’ve tried to log in at gitlab.com without using the invitation link for the project, and my account was being logged in. It’s really weird. Furthermore, I’ve tried to reset my password as well, but I didn’t receive any email after waiting for a long time. Does anyone know how to solve this?