Zynd's eyes are perfectly alright.
I checked your topic again: at the point I entered the discussion, you had stated that you had installed 4.8 again and wanted a new key for 4.8 - not a conversion for 5 since version 5 would not run on your system.
The link only converts, it does not resend 4.8 keys.
Consequently I advised you to contact the sales-dep at avast in order to get a new key.
I feel like I did most of it right.