I think I hacked my way through receiving lnpay to my Umbrel without any 3rd party tools. Just a website & an LND node. Can share details if anyone is interested (it isn't pretty).
Have only tested with Alby. If people can throw me a few sats with other lnpay wallets and let me know if there are errors, I'd appreciate it.
nodes@ipfspodcasting.net