I'm still waiting for payment from April & May, also.
I even emailed them to ask about the late payment... which in the past has resulted in an email ("Oh! So sorry, we forgot!"
and payment via PayPal within 24 hours. And I have had to email a reminder about *EVERY* payment. This time, I haven't gotten the email or the payment.
Also, I emailed them (separate email, same day) about rescheduling the date of a carry-out pizza shop. The other time I did this, I heard back very quickly and they said the re-schedule was no problem.
I just sent another email to Caitlyn (who according to their website is in charge of the mystery shop program) about both issues, and I'll see what I hear.
Practitioner of the Nerdly Arts.