How to clear notifications

Hi,
I have problems with notifications, everytime I refresh page I have 100 notifications next to ring bell icon.
When I click on “mark all as read” notifications are cleared but next ones are loaded.
I have accound for few years now and going through all notifications from time I was not using accound would take forever.
Is there a way I can acknowledge all notifications at once?

Regards,
BigZettt