AVG internet security glitch

I bought AVG internet security unlimited in July last year. The subscription is for a whole year, so I should have atleast 3 months of protection left. However for some reason my avg internet security app is glitched. Nothing shows up and I cant press anything in the app. I keep getting recommendations and requests to look at the app, but I cant as the app will not load. Ive tried repairing the app to no avail. I thought of unistalling and reinstalling but Im afraid it will cost me an additional sum to reinstall it, What should I do?