[FIXED] Avast for Mac 13.1 BETA Program Update not working

Originally posted elsewhere, but the problem seems unique thus starting a new thread:
I am using Avast for Mac 13.1 (beta) on macOS 10.13.2.

VPS updates are still working (although not incremental), but program updates are completely broken. When looking up http://mac-av.u.avcdn.net/mac-av/10_9/beta/AAFM in my browser, I get a 404 error. I have no problems with my internet connection though.

Will program updates for the beta channel be enabled again, or do I have to switch to the stable release channel?

This problem is fixed (in my case). Thank you Avast.