I have no idea what xpay is. nostr:npub1getal6ykt05fsz5nqu4uld09nfj3y3qxmv8crys4aeut53unfvlqr80nfm Hub with NWC on my own node works flawlessly on all the clients I use.
Discussion
Does alby hub work with CLN?
Not sure, I use LND. You can check here or ask the team. nostr:npub1xv8mzscll8vvy5rsdw7dcqtd2j268a6yupr6gzqh86f2ulhy9kkqmclk3x nostr:npub1q5sah9f3p9kl7uqdeaqskqwmg74ktxx70e0093dzh4lpzcp3t0mqzxky65 nostr:npub1m0sxqk5uwvtjhtt4yw3j0v3k6402fd35aq8832gp8kmer78atvkq9vgcru
https://guides.getalby.com/user-guide/alby-account-and-browser-extension/alby-hub/alby-hub-flavors
No, there's no CLN backend at this moment