nobody on Nostr: Mutiny Wallet my brother's lightning channel which I setup a few days ago seems to ...

Mutiny Wallet (npub1mut…23vg) my brother's lightning channel which I setup a few days ago seems to have closed, logs available upon request. he hasn't touched anything and the balance is showing on chain, it doesn't look like a force close but there isn't an option(that I can see) to swap the balance back to lighting. screenshots attached, thank you :)