You have to use an actual LNURL like this:

LNURL1DP68GURN8GHJ7AMPD3KX2AR0VEEKZAR0WD5XJTNRDAKJ7TNHV4KXCTTTDEHHWM30D3H82UNVWQHKYUN0DEAX2URFDENN2DQTSE278