The address palestingray8@primal.net seems to be violating this part of the specification:
https://github.com/lnurl/luds/blob/036d01d8830a3c0cb22da9af523a2802e72bc132/06.md?plain=1#L108
"`LN WALLET` Verifies that `h` tag in provided invoice is a hash of `metadata` string converted to byte array in UTF-8 encoding."
I'm not sure why LightSpark is violating this part of the spec. Possibly you should try to contact them - https://www.lightspark.com/contact and ask - we don't have any contact with them currently.
