Yeah it looks like I'm starting to have problems with posting tweets through Macrodroid. Not sure if it's related or not though...It seems possible if you search the internet, but it is in the category of API and Python module usage that has little to do with MacroDroid.
It may be difficult to get answers in this forum.
It seems that Twitter's API will be paid for, and we need to consider whether we need to pay for automated tweeting.
I believe the Tweet action is still working currently, but I expect it's only a matter of time before it stops working unless I give Elon Musk my left kidney.