How to become MSP partner for Greenbone Cloud?

I used to have an account here: Greenbone VMSP Admin

But now my account says it is disabled:

I need a new account or someone to reactivate my old account, I am a MSSP looking to bring customers into a multi-tenant environment. It is very hard to reach your support, I sent an email to support@greenbone.net and the email came back as denied.