The only thing that happens to status credits is that they expire. If this has happened, there will be an entry on your activity statement about that.
Is there anything in your activity statement?
The haven't tightened - they were loosened. At one point no Ibis Budget in Australia participated, but when some hotels changed hands, the new owner decided to have them in the program.
For reference, the Ibis Budget that were participating when they first started counting in oz. https://terms.accor.com.au/wp-content/uploads/2022/05/ibisbudgetparticipatinghotels.pdf
What they did say in the variations document was that the new annual fee would be the same as the old annual fee. They could change that, but they would need to communicate that, and at this point they haven't.