Can't checkout the machine with BTC lightning


I am trying to buy a “The machine with Umbrel” ( with BTC lighting. I used Blue Wallet (IOS) but failed to checkout… with error message “API error: Payment failed. Does the receiver have enough inbound capacity? (code 10)”.
I tried to change the node information but also failed to register node information, they said "Invalid LNDHub URI. when tried connect to 027c55857564478a25da3d0e9ec05f6b9559267a57050c459cb3b93278cf4d8316@

I think this is weird that you might fail to buy a “Bitcoin machine” by BTC … Is there anyone successfully pay through BTC lightning? Or, can you let me know who should I contact? There is no customer support address at all…