tech nerd explanation on some of this stuff:
TLDR:
They have massive amounts of data - don't be surprised if there are issues here and there.
longer version:
Ipsos is likely the biggest player in the industry, and locations that are in their system are likely from a data feed from the client, or another system, like a sales or client management system.
I work in tech, so I'm only speaking on what I've seen in my industry and not specific to Ipsos or Sassie, or shopmetrics, but so many processes are automated and data is fed in from one system to another, it doesn't surprise me if there are some data issues here and there and they can sometimes take a while to correct.
Things like closed locations re-appearing, or shoppers and locations possibly being flagged incorrectly, does not surprise me with the sheer volume that Ipsos does. I do not know of any other company that has as many opportunities as they do.
It could also be based on quotas for a particular project. They might load up 20,000 shops and need 5,000 of them done. This could get more granular like they need 100 done in each state, and once that quota is met, the shop sits and looks available, but people can't self-assign.
There is also probably a function in the msc software that will turn off email offers if a shopper hasn't done a shop in a while, or their profile is not updated, say every 6 mths. In my world, my company received a report that our software was sending millions of emails a month, and some of them were to incorrect or invalid emails - so we built functionality that if the person hasn't logged in for 6 mths, they would not get emails. Emails have a cost - so every email costs money to send. This could be why people think they have been deactivated, it might just be that they aren't receiving emails. fwiw, I just checked my profile in sassie, and my email offers were off. I turned my email shop offers back on and also noticed my address was showing as unverified - so I have verified it and will see if I get emails from them again.