Why does the AI stall me too much nowadays?

Things were pretty smooth 2 weeks ago, until suddenly everything started going downhill, from getting short bland responses, to getting stalled by the AI when I gave it all the directions for the short, simple stories, it replies with it’ll craft and I’ve to wait for it. Boom, it never does what it promised and then the chat gpt-4o trial attempts are used up in this bs making my experience downright worse compared to what it was before. It even rejects outright nowadays when I tell it to expand the story in a more lengthy manner, or specify the word limits. Any ideas on what happened to the AI?