It says it supports Lightning, but says my Lightning address is invalid.
Both cahlen@getalby.com and LNURL1DP68GURN8GHJ7EM9W3SKCCNE9E3K7MF0D3H82UNVWQHKXCTGD3JKUYRK0GA.
Discussion
I don't know, sorry.
Try to contact their support, the live chat is often active and helpful.