Yes, some areas just do not have shops that populate often. You can activate push notifications if you have the app. In areas like that, shops also get picked up quickly. As someone else stated, phone and web shops are available.
Mystery Shopper Services is still active. Shops can be picked up quickly and, if you have the app, enabling push notifications helps you learn about shops faster.
For all payment-related questions, please contact the MSP responsible for the assignment(s) in question directly. Their contact information may be found on the Payments tab when you log in.
The most common reasons for an unpaid payment include:
1) Shop completed too recently - not scheduled until the next payment cycle.
2) No Paypal address on file in your Extended Profile
3) Independent Contractor Agreement not signed for this MSP
4) No W9 form (if required) on file with the MSP
There is no harm in asking a scheduler. I get requests for distance pay or people will say they will only do a shop for X amount.