In these two posts I answer all of your questions here :)
The if the merchant is using the square terminal to generate a lightning invoice then the sender may use any lightning wallet. They don't need to have cashapp themselves. If you want to pay with bitcoin, you'll have to ask of course. It's only awkward if you make it awkward however :)
All you have to do is ask \ stacker news
All you have to do is ask - an update \ stacker news
In these two posts I answer all of your questions here :)
The if the merchant is using the square terminal to generate a lightning invoice then the sender may use any lightning wallet. They don't need to have cashapp themselves. If you want to pay with bitcoin, you'll have to ask of course. It's only awkward if you make it awkward however :)