Ubisoft Login Rejects Valid Credentials After a Week of Failed Attempts

I haven't been able to log into my Ubisoft account for about a week. On the login screen, I keep getting the warning "email or password incorrect." Even though I was previously logging in without any issue using the same email address, now it won't accept either my email or my password. During this time, I've tried at least 50 times at different intervals, but the result hasn't changed.
I still have access to the email address linked to my account, so there's no issue on that end. I have over $326 worth of games and content purchased on my account, and right now I can't access any of these purchases or play my games. Since I also can't find an address or channel to directly contact Ubisoft's support team, I'm unable to resolve this issue on my own.
I am requesting that my Ubisoft account be reviewed and confirmed as belonging to me, that it be reopened after the necessary security checks are completed, and that my access to all the games I've purchased be restored.