Also, I’m guessing that https://pay.blitz-wallet.com/ is not set up to work with the Spark wallet yet, because I just lost $1 into the void by trying it out.

One question…
I noticed that nostr:npub1cm3rpgj7457yjuqnvdalxaauakqu0ndkpkyp5cldkyutpz4xszpsmk96wt addresses don’t support LNURL-verify, which means I can’t use it with some of the open source point-of-sale apps I’m currently testing.
Is this a feature you can enable in a future release?

Also, I’m guessing that https://pay.blitz-wallet.com/ is not set up to work with the Spark wallet yet, because I just lost $1 into the void by trying it out.

Yep. That is not converted yet
So…can I get my dollar back somehow? 😆
If you load the seed for your wallet into blockstreams app and choose a liquid card you should be able to see it.