AVG Free - youve lost your pro protection popup

Windows 7, desktop computer.

I upgraded to AVG Pro without intending to do so. When the trial period expired I kept getting messages stating "You've lost your pro protection".
I tried the following steps (based on a similar posted question):
Uninstalled AVG.
Ran the program AVG_Remover.exe
Did a search for all AVG files - deleted them.
Re-installed AVG free.

Still getting the same popup "You've lost your pro protection".

Any suggestions?
Thank you. Mike
 

Hello Mike,
We apologize for the inconvenience caused. I have just sent you an email with the instructions to get connected with our senior technical support team. Please follow the email instructions to get additional support to resolve the issue. Thank you.