Meta CAPI inaccessible due to old agency setting it up?

My client’s old social media agency set up her META CAPI link to a different META account - that now no one has access to (relationship went south!)

META can’t seem to help and suggest we use the stap.io? to link the account for tracking.

Can WIX help undo this and link the correct META account to WIX?

Or does anyone have a work-around.

stap.io was another $10 a month, not too much I know, but still, not ideal, it would be better to have it all syncing correctly.