Ok so, I signed up for the mysterious melody program. And I got the event that i've been partnered with a person. (which I haven't been) 220+ times. I just deleted about 5 of the events but I can't possibly click them all away. If I click on the trashcan on Other events. they won't dissapear. they just stay.

How do I get rid of all of these events? I'm a bit confused.

There were some server issues that may have caused this earlier. If you still can't get the events to go away, please file a ticket. I believe a UA can clear your events for you.