I want to convert my existing separate accounts into a single account fot Ultimate anti-virus app

I had to remove/uninstall my current AVG subscriptions because of hard-drive space issues. I re-installed the free-trial AVG Ultimate anti-virus single-bundled service. I woul like to convert my current AVG anti-virus subscription into a single bundled anti-virus service and apply the balance of my current account/subscription to this new bundled anti-virus account. Also, I am experiencing some technical issues. Please assist, tech/customer support!