You don't say what Avast Program you are using ?
Nor do I know what your Avast settings are either, Silent Mode, Do Not Disturb, etc. ?
If you do have a paid version of avast, you should be able to stop some of this ?
I have been using Avast Free for over 18 years and I don't see this as constant moaning, any popups that do creep through, just bring a dismissive smile to my face as I close/ignore them. Clearly I have a high pain/tolerance factor.
Why, you say have I not purchased Avast Premium, etc. For the most part I don't actually need the additional components/protection/functions offered as I pretty much have them covered by my own practices and backup regimen.