What extension are you talking about? Have you checked with its support?

Zenmate free VPN https://addons.mozilla.org/en-US/firefox/addon/zenmate-free-vpn-best/

There's no option to turn it off.

Have you checked with its support?

I've searched in google. I couldn't find the answer. Apparently the app nudges me to buy the subscription, which I don't want to do. Obviously they don't want me to stop receiving their notifications. I'm just wondering if there is a way Firefox can force an extension to stop sending them.

Did you try to remove it from the Add-ons Manager?

I don't want the extension to be deleted. There seems to be no apparent option to manage extensions' permissions in Mozilla Firefox. This extension does have a permission to send me notifications. How do I change that? Some console tweaking maybe?

I called for more help.