Major issues with Scheduler!

Hello - I currently am having some major issues with schedule inside express. When creating posts it starting giving me errors for Instagram (I'm only posting feed, saying it doesn't support IG Stories, etc.) - Subsequently I sized my photos 1:1 and it let me schedule.

Then posts aren't showing up on the scheduler after saving, so I repeated. An hour later I have several duplications, and the delete function is not working. Doesn't matter the platform I'm getting duplicates and unable to delete them. I've refreshed, closed out browser, etc. I know they are working on functionality, but this is a major problem, not a feature, that can cause implications to public posting!

I have so many issues lately with posting that I am looking at other options at this point because it is causing me so much wasted work time and frustration at a very important event time. Help!