Reinstate an account that was left behind for years

This is my cross. This company hired me to reinstate and manage their seller account. The account was left to himself for years and many infractions stayed beyond the 180 days term.

After a month of work I noticed 2 marketplaces had 200 points, no visible problems but were still deactivated.

Called the support and they told me years ago the store sold a food supplement they did not like. This single infraction, left unresolved, cripples the whole account.

I doubt mediation can be started because the original notification is way past the 6 months limit. I will still give it a try.

Do I have another possible solution?