GPT4 replaced by GPT40 24 hours ago

Custom gpts no longer work since the release of gpt-4o.

So I only use GPT4 because it’s the only one that was functional.

However, since yesterday, GPT4 has started writing as fast as GPT4o and no longer respects any instructions.

there is now no functional GPT.

I still don’t see any communication on this issue.

When will all this be fixed for good?

And why are all versions worse than GPT3 on the day it was released?