A moment ago, I noticed I got a gold badge related to this question. I clicked on it and I found it is related to another profile of mine I did not use for ages as I have no idea which email and password I used for it.
But I am not supposed to see that badge on my present profile. Is not this a bug?
Note that I asked in the past to merge that profile to my current one but I have not received any answer.
Here is the screenshot:
Note that I do not receive any other notifications except the ones of the same nature (badges). If someone comments on one of my posts on the other profile, I won't receive any notification here.