Trying to upgrade and seeing this message? There are a couple of reasons you might see this.
Outstanding payment - You may have an outstanding balance remaining on your account. We prevent accounts from upgrading further until these kind of issues are cleared up. Be sure to check your Billing History to see if any invoices are unpaid. If this is the case, you can resubmit payment directly from the site.
Account Suspension - Our compliance team may have your account under review, this status also prevents further upgrading until everything has been resolved. Read more here about what to do in this case.