I managed to get my ChatR hotspot and tethering working by changing the APN (Access Point Name) field within the Mobile Network settings on my phone! As you may know,  ChatR default settings do not allow for hotspot or tethering, but by adding the parameter "dun" to the APN Type field in the advanced section of the Mobile Network settings got it to work.   More specifically, you need to add ", dun"  to the APN Type field as there are other existing parameters that you do not want to delete.  That is, do not get rid of those other existing parameters, but use the comma "," to add "dun" to it.

I was not pleased to learn that Rogers (Chatr) removed the hotspot feature from their service. It was a necessity for me. I was told that if I had the old Mobilicity SIM it would work, but none of the Chatr SIMs were programmed to allow that feature. Sooo....I found FREEDOM. Yes, Freedom mobile allows my hotspot to be turned on AND there are thousands of Freedom hotspots to tether to. Yay Freedom!