@Christina73 I agree, this is most likely an incompatibility with Band Steering. I wrote up an explanation here a few months ago as to why this causes problems for some devices but I will summarize the key points below.
With Band Steering in effect, you configure the same network name on both the 2.4 and 5 GHz networks and the WiFi Access Point "steers" the WiFi client to the most optimal band, which is typically the 5 GHz network. When I say "steering", it accomplishes this by ignoring association requests on one band and only allows the WiFi client to (initially) connect to the other band where the AP wants the connection to take place.
Band Steering typically causes problems in the following two cases:
Band Steering is becoming commonplace these days and any incompatibilities can usually be fixed with a software/firmware update on the client device... unless the vendor has stopped supporting that device and is no longer offering updates.
Band Steering also needs to be enabled in order for the Ignite Pods to work. I don't know what Rogers suggests for a workaround if you have Pods but also need to disable Band Steering, temporarily or permanently.
I had a similar problem. Through online chat one of the Rogers techs was able to remotely configure my modem to run both the dual band channel and also a separate 2.4 channel. I reset my cameras and connections and used the 2.4 channel when setting them back-up and they work fine now. I can access them from my tablet etc. which is back on the dual band channel but the cameras themselves need to be on the 2.4 wifi channel.
Initially I had the same problem going from Hitron to Ignite. I had set my Airsight cameras to static ip connection so when the switch to Ignite happened my cameras would not automatically adjust to the new IP settings going from 192.168.0.1 to 10.0.0.1 and on the Ignite modem the search tool wouldn't see the cameras so I could access the setting to make the change, I directly wired the cams to the Ignite modem and pushed the reset button on the cam for 30 seconds (just to be sure) which will reset to factory settings and then the search tool will see it and you can get the cam set to the Ignite modem ip. First, Make separate the 5Ghz from 2.4Ghz as well.