Avast is down, constantly

I have had the free version for a year, no problems at all. When the free subscription ran out I bought a year, ever since I have had nothing but problems. When I run a scan I constantly get “Avast is down” restart Avast. I do this about 10 times during a scan and still cannot complete a scan.
So I used to have something for free that worked, now I have something I paid for that does’nt work…
Yes, I have reinstalled a few times, which makes no difference at all.

https://support.avast.com/article/Troubleshoot-Antivirus-UI-Failed-load