Premium Security

Avast Premium Security Does it have a Crypto Mining Protection feature? It doesn’t mention it on the features page.
Additionally, how can I contact them? In the Avast Premium Security version, annoying advertisements appear claiming that my device is “not clean” and urging me to purchase Avast Cleanup Premium. Honestly, this kind of annoyance is unacceptable. The user wants protection only, especially protection from cryptomining. Do not make the user feel that their device is unclean; this is frustrating. I purchased Avast Premium Security, and if I want to buy Cleanup Premium, that is my decision. If I don’t want to, these intrusive ads push any user to switch to another company. We hope for improvements to the Avast Premium Security program in future versions. Thank you for your efforts, with my regards.

Avast does not have Crypt-miner specific features, but it does detect Crypt miners as malware.

You can turn off (most of) advertisement if you use paid versions; go to Settings => General => Personal Privacy and uncheck all “Offers” options.