I don't believe the number of shops you do has anything to do with it. I received the axe after 200 + shops but I am pretty sure I know why. My wife joined about two months before I got axed and she was axed at the same time. There are more stories like mine suggesting two shoppers using the same computor to access their website will cause you to be deactivated. To further instill a possibility of fraudulent activity my wife flaked on shop, I recieved a call to do the shop for twice what she had contracred for, I accepted, a week later after putting in a shop I realized I had mixed two locations up, notified them immediatly, during the wait to get a reply back my wife was screening for a visit to check out Mayor (bleep)cheese and friends over the phone and told the scheduler she used to work for a competitor that was the Monarch of Mooby's and thirty minutes later we were both deactivated. so when she told them of her previous employment I was there by biased by association worth anappoint that probably already had a red flag on it due to two users on the same.computer.
So if you add up all the instances in my story then I'm sure any business looking at that would say it's not worth the risk and cut the losses. It was however like some say the best thing that happened to me. I now make more money doing fewer jobs and recieve calls daily from different companies. Market Force was a great training opportunity and I made good money with them. I do not particularly care for their policy pertaining to my cancelation, whatever it is, but they were a good company to make money with. Fast and easy shops with no narrative And local jobs every rotation? Nice.
I would recommend like others have änd sign up for more companies. There is so much more out there besides what they offer that you could not do it all without a Cartel connection and even then you would need that tricky watch that stops time while you still move in it.
That's my take on the matter.