need help : upgrading to pro problem

Avast Free Antivirus / Premium Security
1

hi i’m a avast free user then i decide to buy a single license (1 license 1 pc)
but after i buy, i still cannot turn on all the shields and when i login always internal server error

http://i16.photobucket.com/albums/b9/arie1st/avast%201_zpskfgkwen1.jpg

http://i16.photobucket.com/albums/b9/arie1st/avast%202_zps23csdtbw.jpg

http://i16.photobucket.com/albums/b9/arie1st/avast%203_zpsgr6uuaug.jpg

http://i16.photobucket.com/albums/b9/arie1st/avast%204_zpswjpwq2as.jpg

anyone can help??

2

Perform a clean installation of the version you bought the license for.

3

Clean Install of Avast:
https://goo.gl/4Ptzkf