You are doing it wrong.
You create the LN address in the LNURL-pay section.
I can create an address inside the Paylinks extension but it never creates a .well-known to go with it. I have patrick@lnbits.sats.love setup right now but https://lnbits.sats.love/.well-known/lnurlp/patrick doesn't show the user.
Discussion
Perfect time to see this. I actually just logged in to play with it more because I'm that frustrated I still haven't figured it out and feel like I'm not usually this retarded.
I thought Pay Links was the lnurlp extension? I'm not sure I know where to go if that's not the right spot. It generates an LNURL for me but just doesn't generate the lnurl-pay link so this makes sense I'm missing a part here.