1120S extension due date clear up

[ILLMAS]

I am a bite confused, I thought all business returns were due on 7-15-20 after they were extended, I tried submitting an extension in ATX it was rejected because it was passed due.  

[Lynn EA USTCP in Louisiana]

Only those returns which had a 4/15 due date were given a revised due date of 7/15 and the ability to file an extension between 4/15 and 7/15.  1120S and 1065 were due 3/15 and were not afforded this relief; extensions for 1120S and 1065 should have been filed by 3/15.