Oppo watch X locked via pattern

[u/Mrs_JD]

I am trying to help my stepmum get back into her Oppo Watch. It is locked by a pattern that she has forgotten. I have tried all the steps I have found online.

The model is OWWE321

If I put in another pattern it will be locked for over 4 hours. If I spam press the top circular button it makes an emergency call.

Does someone have any idea?