I'm not sure what types of shops you did, but for the ones I do, this is what is stated on their home page:
Payments for reports completed and submitted between the 1st and 15th of the month will be issued between the 25th – 30th day of the following month. Payments for reports completed and submitted between the 16th and 31st of the month will be issued between the 10th and 15th day of the second following month.
So for me, for the shops that I did between April 16th and April 30th, my payment will be on time if it arrives by the 15th. So maybe wait and see what happens in a few more days.