Adding new Premier Lic

Hi,

I’ve bought a new license (Premier 5 years, 3 devices, including cleanup premium) on ebay. The lic runs locally. But I can’t add it to my online accout. How can I fix this problem? (Perhaps the dealer added it already to his own account?)

There are several licenses for choise within premier. Most ending within 2019.

I need some help.

https://www.avast.com/faq.php?article=AVKB26