Personalized GPT no longer works

Hello, custom GPTs no longer listen to a single instruction…

I recreated a new one with one single instruction:
“write using familiarity”

Impossible… I did 15 tests in a row, it says that the style is respected. When I ask him to list the sinstructions he tells me that he made a mistake and that he ultimately didn’t respect anything and that he will correct it. Then he immediately starts looping again, apologizing, and making the same mistake again.

when will this be fixed?

Why does everything get so bad over time? It’s not logical.

All that remains is a GPT working limited to a few messages per week. I use it less and less, the competition is clearly starting to bury openai because of these major dysfunctions