Actually I am not sure if the unseen pay is due to Paypal of the company for whom I've performed so far three shops for.
I did notice that they are good watch dogs on my account, because as soon as I called them, I got a customer service agent, who immediately pulled up my account and answered questions concerning my inquiry. Her responses were so quick to me that she or someone had to have been noticing when I went into my account to check it. I love that watch dogging and the fact that the agent was very prompt and suggested to me that I ask the company for whom I'd done the shops for a copy of their transaction deposit, which the mystery shop payroll person was not able to do. She was only able to tell me that the shop had been remitted okay for pay. Well, I could see that myself. The remittance of okayed shops simply says that the shops have been submitted to the shops' payroll dept not to the Paypal account.
Additionally, when my Paypal account was set up and linked to my bank account, Paypal deposited three very small amounts not over $1.00 into my linked bank account to be sure that all worked well. I was to email them back upon receipt of the funds. When I looked into my account, the small deposits that Paypal had sent to me were in my account. I was also told by the Paypal agent that wnen funds are received into an accunt, an email is sent similar to the one I received upon Paypal placing the small deposits into my account.
Hope this helps too in addition to the other comments from Paypal users.