Help. I need to know how to prevent sudden auto-update with no warning

Just installed the VPN via the offer from CCleaner. Tonight out of the blue my laptop restarts with no warning of anything so i am freaking out something has gone terribly wrong with it. I was also right in the middle of something so nothing I was doing got saved.

I checked the settings in the VPN and if turning off auto-updates is there i cannot find it.

This is just irresponsible of avast to design their vpn to behave this way. IMO