Inspected this house today and the seller has had the sub panel (15 and 20 amp circuits) replaced and the new panel now has every circuit on AFCI breakers. House is wired with aluminum wire. Will this panel be protecting all aluminum circuits throughout the house properly? I have never seen this before.

Also, some of the older receptacles were not CO/ALR and the aluminum wires have been pigtailed with copper using lavender wire connectors. I now these connectors are not quite safe and other type of connectors are recommended. What would be the best way to report on this?

Thank You