Avast Premier is not activating

Avast Free Antivirus / Premium Security
1

Hi
I purchased ‘Avast Premier’ yesterday but when I try to use the key- “The request can’t be processed at this moment, please try again later(-1)” message pops up.
What to do now?

2

→ https://www.avast.com/faq.php?article=AVKB88#artTitle