But that's normal. None of us have been able to reach anyone on our homeworlds.

[Sure, most of them wouldn't even have had the means to try, but even so!]

The calamity froze the multiverse for everyone. I'm sure once we sort it out they'll get right back to you! But you know, this still doesn't explain why or how everyone has to forget about your existence. If you just observe and don't meddle in the history of the worlds out there, why do you have to be so secretive?