I'm sorry to hear that your account was suspended. In this article, it mentions that CPU Usage could be a reason for the suspension. Did the email you receive about the suspension mention this, or mention any other reason for the suspension?
If you were suspended for CPU usage, I recommend taking a look at the following article for a bit more information:
How to view your CPU usage
How to enable your account
In the team I work in, the Customer Community team, we are unable to unsuspend accounts. If your account has been suspended, you'll need to either respond to the email you received our call our Support Department. They will be able to escalate the issue to our System Administration team, who can explain further they why's and how to's
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