I can add my own GDPR consent to my site. I don’t need an unrelated plugin forcing it onto my site without permission (thereby causing me to have *two* of them since I already have one). Let alone, as is the case with your dialogue, a dialogue which includes an exit link to a 3rd party web site which I have not approved, directly added to my homepage. Yes, GDPR is important to abide by, but the tactic of a plugin developer adding it like this is not acceptable.
Just a note that I’m running an unmodified version of this plugin on 4.2.2 and notifications work fine.