Private Provider appears up and working. I just logged into both separate routstr chat clients. Otrta did seem to have a 400 error with multiple providers and yes it could likely have some occassional down time as the project is developing. chat.routstr.com appears functional as normal and returned queries from private provider.
Both chat wallets worked and I sent funds and cleared funds multiple times now.
From my experience with the wallet it is important to use the same nsec or extension to log in. Hit refresh in the wallet. If you selected nip 60 then it should be saved to nostr relays. Check the api key section and refresh.
I am only be able to see a total user balance on private provider dashboard and individual user balances are anon hashes. I don't have custody or run a mint either. Those are your mint balances and I have no control over them. You can send funds from one client to the other. There is no lock in.