why does my reply on my post  say it is coming from "NULL" and not my name? 

Hello, I am having the same problem. If you find the solution, can you share it?

Same for me since this morning. Hope someone will find a solution quickly.

Same here, new comments are coming from a „(null)“ profile, some old ones were changed as well. This looks super suspicious to the followers…

Same too. Not sure isn’t some technical issues affecting most of us

i am experiencing the same thing. 
automation from IG is showing up as NULL from sender and not my IG name