I mean depending on the POS system that restaurants ultimately end up upgrading to. If the POS system doesn't work with the program, RN is really slow at realizing this to remedy it.

I'm only assuming this happens because this happened to me when a restaurant that I frequented changed POS systems. The new POS system integrated with a Square Chip Card Reader. I had to send in the receipts to get credit. I also noticed that there were no reviews after a certain date. After 4-5 months, RN finally removed them from the program. I went back and asked about it out of curiosity, and was told that they could no longer participate because their POS system did not work with RN.

The EMV shift (now a long time after the fact) is causing restaurants to change their POS equipment, which is affecting how things work.