We've sent an email from our official company address. We're still waiting for the forum staff, admin, or moderators to look into it.
If this is not the email that was used when opening the account, it will not be very straightforward, but the recovery team may be able to confirm ownership with that and other details they may request.
We are a company and use our official domain email, which ends in @bspin.com. Hackers do not have access to this email. Once an email is sent from our official address, it should be sufficient to prove account ownership.
In a scenario when an individual creates an official account to promote affiliate links, the company should not be able to come into the forum and claim that account. You can create a new one and prove that is the official representative on the forum. So this may not be sufficient proof.