I just tried with an email and then it gave me a QR code, so seem to be working, maybe it glitched for you
But it’s a custodial service, so just play with few sats
Yes, working now, see it's using BTCPay Server.
Will need LNURLwithdraw implemented to be smoother. Could just scan a QRcode ratger than creating and copy-pasting a BOLT11 invoice. Also the parsing refuses invoices in capitals.