If you bought a license on the official website, then most likely you won’t be able to return it (after all, bank cards are blocked), but you can try to contact Webroot through the official website. Read more about returns on the webroot.com/secure website.
If you bought a key for 30, 60, 90 days from us at Webroot or somewhere else, then the most correct thing is to write to the seller by mail (contacts are always indicated during the sale) and request a refund for the key. If the seller refuses, then provide evidence that you have already uninstalled Webroot and installed an alternative antivirus – a couple of screenshots will be enough. After that, it would be dishonest not to return the money.
Click on this link: How to Fix DISM Error 87 in Window 11 with Webroot?