As far as I'm aware there is no scaling function in Avast.
I have even looked in the Avast Settings, type "geek:area" without the quotes in the search window and enter.
The only thing I saw that might be vaguely connected might be in the Do Not Disturb Mode section at the start but that relates to Disable Draw over window, but I suspect not. Though from your image, it appears that you have set Avast to Do Not Disturb.
Your UI Images are also different to mine, but:
1. I actioned mine immediately on the 12 warning.
2. Mine had Renewal Options button and a "Continue with Free" in the very first screen, which I used to get to the second screen.
3. Your initial screenshot of the Main UI screen is 1001x673 which appears to be very close to my first screenshot at 1010x674 and I didn't resize my screen capture to attach it.
Now as you can see from my signature below my posts I'm still using avast! free 23.1.6049 (build 23.1.7883.774) UI 1.0.746. I generally hold back on new updates, depending on what the update contains, is it a function I use, a bug fix that impacts me or closing a vulnerability. What version are you currently using ?