Pay in store is as it said payment method to pay in store. So only when people check that they will pick up their products in store, you should see this possibility. Is there a way to connect payment methods with Pickup point providers?
The shipping method selection precedes payment method selection. See how it can be done with Payment Director example. (Similarly, you can also force that pay in store is the ONLY option available)
Some older versions had hard expiration dates. Email us at support at noptools.com with your url and we will send you a temporary license file. (look in the Payment Director configuration page above the grid on the left to see what url/domain is recognized)