popup thingy

Hello, hope everyone who reads this is doing well!
I just noticed that when you go to, on the bottom-right it displays a little banner thingy for I never noticed it before because I had ad-blocker enabled so it never showed up, until I viewed it in another browser that doesn't have it.

For the life of me, I cannot figure out where that is coming from! You'd think it'd be coming from a font plugin, but there is absolutely no font plugin installed on the website. I've tried checking anyplace where code can be manually inserted as well and don't see anything.

Could someone here maybe be able to shed some light onto where this is coming from? I could hide it with CSS, but I don't want to just hide it, I want to completely get rid of it.