Got it, thanks!
So I didn't put my nsec in, either. It makes its own npub for your profile, but I don't post with it.
I use it for zapping and receiving to the lightning address. I've onboarded a couple of people into BTC with it. I send them payments for cigars or ammo or whatever little thing we're swapping. For big payments I use my own node, but Coinos is easier for the small day to day stuff.