If the funds are on chain, i wonder if can try using a wallet like sparrow to recover using an exported xprv. Id try p2tr and native segwit script types with standard derivation paths and set a high gap limit of like 1000+.
I think LND uses seed words that are not BIP39. I’m pretty sure it would still be possible to export an xprv and derive addresses though.
I was able to rescue them with Sparrow as you and Zeus suggested. I'm not happy to have to use this kind of a failsafe, but I'm glad it was there and worked when I needed it.
I have had several issues with Zeus wallet, but whomever is behind the social media account is absurdly responsive and really knows their shit. One short message and they usually have me out of the initial jam (and potentially onto the next one, but then we repeat until I get my money recovered). So far, no funds lost other than some fees for channel closing (or getting them force closed on me).
