I think they don't want to take responsibility of any key that is purchased from an unauthorized seller which is understandable. That's why you got such a reply. The maximum they could do is check if the license is valid and if it's used by anyone else which you got from the support chat.Regarding activation questions, for example, Supervisors provide vague, inconclusive answers. In many instances users asked about storing activation keys two of them recently asked about keys purchased from StackSocial. Instead of giving users a conclusive answer, the supervisor implied and even stated that StackSocial is not an Eset reseller. The answers feel like a "threat" which tried to remove liability from Eset in case sth was wrong with the keys.
If you meant the issue of ESET web protection not working with AdGuard VPN then a similar issue I reported to Bitdefender support via email a few years ago. Similar issue of BD web protection not working with a Firefox VPN extension. After few not so productive backs and forth emailing they simply said something like, using another network/security product with Bitdefender is not recommended and compatible. So, they will not do anything about it. The same thing is true for Avast and some VPN products/extension and AdGuard for Windows. AV products will not take the blame in such situations and may not even explain properly.Another instance was about PUPs and problems likr incompatibility with Adguard Dekstop and Adguard VPN. The answers, again, never address the core issue and are desmissive as well.
The chat support may do a better explanation if they have the answer since they can't just stop responding to a customer unlike forum support or support via email where there is a long delay between each reply.
My ESET forum experience is, let's say average. Not amazing, not awful.
