My Netlify account ha been suspended, I don't know why?

This post mentions being told about “suspicious login behavior”:

This post mentions originally having a ‘git account’ and trying to use their ‘email’:
https://answers.netlify.com/t/my-account-has-disappeared/97520

This post also mentions “suspicious login behavior”:

As does this post:

So anecdotally it certainly seems related to logging in, or logging in with both GitHub & Email.