I could only hear some conversations, but I heard multiple people being told to go to a different counter to do a TM30, including one or two people who said they owned their condo.
For the next part I could only hear 60% of it, but I believe at least one other person said they had filed their TM30 electronically and they were asked to show it on their device.
Separately, interesting that many people seem to be getting approved after 15 days pending.
As far as whether there is a 7 day grace period on top of the 90 days, the official document mentions that it can be submitted within that period. However, the multiple references to having to pay a fine only mention 90 days. https://www.immigration.go.th/en/?page_id=1666
"If a foreigner staying in the kingdom over 90 days without notifying the Immigration Bureau or notifying the Immigration Bureau later than the set period, a fine of 2,000.- Baht will be collected."