We're so happy to hear you're interested in using your account again. However for your account security we are unable to go into your billing details here in the Community. The good news is you can reactive by logging in and going to the Plans & Pricing page in your account. This is also where you can see the different pricing levels and email plans available.
If you have any further questions our Billing Department is available by phone. One of these support agents can help find the answers you need!