That is an invoice. You need to go to your profile / settings on whatever app you're using, look for the Lightning or LNURL field, and put in an LNURL, not an invoice. If you don't have an LNURL yet, get one with Alby or Wallet of Satoshi or some other app first. You can also log in to your nostrplebs.com account and set up LNRUL forwarding, so you can put your nostrplebs.com address in the LNURL field on nostr.
Discussion
Love the help you're giving. Following
Can't find it in phoenix wallet yet.
Signed up to alby but it seem to generate a new address, can't find a way to use my existing address generated on phoenix to alby, even tough I have the seed phrases...
I'll go watch some tutorial first. Or maybe I'll just use alby instead of phoenix. I like the idea of having non custodial wallet though
I've got it now. Switched to alby from phoenix. I think I'll just keep both wallet. One custodial and one non custodial