How Can I Know if my Acct is "Suspended"?

Yes, you can see the account status in the client area. If the client area doesn’t say your account is suspended, then your account is not suspended.

Then why are you being redirected to suspenddomain.org? Normally, I’d point you to this article: https://infinityfree.net/support/why-does-my-domain-redirect-to-suspendeddomain-org/

However, in this case, the redirect is caused by a system issue: 404 Errors, suspendeddomain.org, FTP errors