Getting unwanted messages

[A Former User]

A Former User last edited by

Hey, I got a message like this twice already but I never signed up for those:

They clearly don't come from Opera (as it looks scetchy as hell), which I allowed to message me about products and services. The only website I explicitly allowed to message me is mailtrack.io.

My Android phone tells me, Opera can send me messages from mailtrack AND Facebook:

I never allowed Facebook to do that, neither can I find the Facebook website in my browser settings to disable messages by them. I don't even know who is sending me those messages.

Is there a way to identify which website sent me this push message?