Just for your reference. I am in London Ontario with similar weather last few days. I have level 1 charger only. I was able to charge from 60 to 100 over about 15 hours. This is similar to November, about 3% per hour.
It's in my ground level garage and it's not a problem for my cell phone there. It seems to me that the car can send signal fine because status update is always normal but it can't reliably receive signals.
I have had my i3 Rex 2017 for a week and had some recurrent issues with iremote app (no new ConnectedDrive app in Canada).
In my iRemote, I am able to get updated info such as current charging status. However, when I am trying to send a command to the car, it usually got stuck on "Sending to...