Issues with COpilot on a mac, responses are full of grammatical and other errors

During the last two days copilot has become unreliable is the only word I can use to describe. THese are the kinds of issues sentences that don't make sense:

words in the wrong order,

strange “non‑English” intonation,

1. fragments like “You can edit can move it one the event” —
2. spelling errors
3. sentences that collapse halfway through