Check
- Which portfolio owns the account.
- Whether sharing was removed.
- Whether a restriction exists.
Do
- Contact the owner.
- Ask for the share to be restored.
- Export data you can still reach.
Long term
Move important assets into a portfolio you own, with the owner's agreement.
Official sources
Meta changes its help pages, menus and forms often. Follow the wording on your own screen and the current Help Center. Restore Ad Account is an independent service and is not affiliated with Meta.