AVG Web TuneUp is taking up all my hard disk space

Hello Paula,
We regret for the inconvenience caused. We would request you to follow the instructions on the article https://support.avg.com/SupportArticleView?l=en_US&urlName=AVG-Web-TuneUp-takes-up-available-disk-space to freeup the space occupied by the AVG WebTuneUp program.
Thank you.

Some months ago, my C: disk started getting full, until it eventually was completely full, with 0 bytes left. I tried to delete some videos, documents, pictures, even some programs, and 2 or 3 minutes later, it was full again. Once I deleted all of my videos, almost 50Gb. When I checked my disk 5 or so minutes later, I had 1 or 2Gb left. (It was really nice having to delete 50Gb of videos, and not even getting to use those 50Gb)

Yesterday, I decided to use Treesize to find out which folder or program was taking up all my space. These were the scan results:

After a quick search on Google, I found this: https://support.avg.com/answers?id=906b00000008svJAAQ
I believe it's the same problem. I've already uninstalled AVG and AVG Web TuneUp, but they left some folders in C:\Program Files and C:\Program Files (x86), which I deleted as well.

As you can see on the imagem above, it seems that that AVG Web TuneUp folder (C:\Users\username\AppData\Local\Packages\windows_ie_ac_001\AC\AVG Web TuneUp) is occupying 234Gb of my disk's 286Gb. Shall I delete this folder? I even started the deleting process, but I stopped it because I was afraid I might have been deleting something important. Is it safe to delete the folder? If not, what am I supposed to do?

Thank you,

Paula Alves.

Hello Paula,
We regret for the inconvenience caused. We would request you to follow the instructions on the article https://support.avg.com/SupportArticleView?l=en_US&urlName=AVG-Web-TuneUp-takes-up-available-disk-space to freeup the space occupied by the AVG WebTuneUp program.
Thank you.