My practice also ignored by AC support, only response to three emails 7/3/2022, 7/5/2022, and again 7/5/2022 to same is robo generated case# f/b "we'll get back to you shortly" with no response to date.
Using AC since 2010. Currently using v11.1.2. Always followed self service instructions in past, and when they failed contacted support who remoted in and made changes to my peer to peer AC installation. In my case, instructions fail on page 1 pre-requisite checks line 14 for "You have SQL 2012 Express SP2 of(sic) higher installed*".
Followed instructions on page 6 to see if I have SP2, but these instructions also fail as SQL Server Configuration Manager referenced is not found. Fortunately, JamesNT helpful response to my post on that provided another way to check, and confirmed I don't have SP2, only two year earlier 2012 "RTM" version, despite following all directions and allowing AC Support to log in and make changes over 12 years of subscribing.
I complied with page 1 "if you do not have SQL 2012 express SP2 or greater installed, contact our support team at (866)-382-5932 for directions on how to proceed and do not attempt the upgrade process listed below." Calls go straight to voice mail. left two messages on VM 7/5/2022. No response to date. Clicked on "Chat" but from 7/5/2022 to today pop up box "Our agents are not available at the moment."
I am also wondering what my yearly support subscription payment is for.