It's because you're not suspended for storage. All suspensions except for storage overuse (which is self-correctable by buying space) will lock you out entirely because they require contacting support to resolve.
Your suspension is specifically for excessive CPU use due to running scheduled tasks too frequently. I've disabled all scheduled tasks that run more frequently than once a day, and unsuspended you. Please reduce the frequency and number of jobs on your account. If you need to be able to run jobs more frequently, we recommend moving to Morty (where you will be charged fees for the extra resources instead of being suspended).
Unsuspended. It may take up to 2 hours for your domains to work again.