It's not just you who experienced it, I think I also experienced it although it wasn't 57 times. I got double notification which means only 2 times.
btw, saya kaget ngeliat mentioned di telegram (bitcointalk supernotifier) dari sampeyan kok sampe 43 kali ya?. apa errornya di thread ini atau bot telegramnya?.
One of our local board users also experienced the same thing, he got 43 notifications for the same topic. So, I think it's not a mistake on our end. It was a problem in the notifier, now the problem is gone, I think it's fixed.