Even if and when this bonus popup should be offered, bug or not.
Personally I feel this loyalty bonus thing shouldn't have to be CLAIMED, if avast feel you are deserving of a loyalty bonus then it should be given automatically upon renewal.
I'm thinking a reasonable sum would 15% off the current price in the first year and lets say 20% in subsequent renewals.
Users shouldn't have to Claim it, rather than actually starting to look for a cheaper price, you only have to look on-line for Avast Premium, etc. licenses any you will find some legit options (not hacked licenses, etc. that are likely to get pulled/blocked by Avast).
Treat loyal customers as just that, loyal and give them an automatic renewal bonus. Not too long ago this was the normal action, why stop. After 80% of something is better than 100% of sod all if you hack off paying customers.
All this from a Loyal Avast Free(loader) user, no discount required
