Do
- Use Instagram's hacked account help.
- Reset the password and log out other sessions.
- Check linked ad accounts and Pages.
- Pause unknown ads.
Check
Email and phone number on the account.
Afterwards
Turn on two-factor and review connected apps.
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.