Lack of guide made me in trouble to activate for half a day.

I’m in Canada using iPhone and to make it short, you should
- activate Data Roaming and
- deactivate Automatic in Network selection and try networks one by one and select one until 4G pops up on top left

Customer service is inexistent.
Tried 3 times, not a single response. Very frustrating.
Voice service is patchy. Does not work on AT&T. Workaround is a voice over data solution for which you need a QR code that is delivered by customer service, if they exist.
So no voice :(
Activation was ok.

It was easy to install eSim and use it. Unfortunately, the service is horrible, it's the slowest possible data and very hard to use. It is OK to use for google maps but playing mobile games is impossible.

I had initial problems setting it up and the online chat support guy was excellent in helping me sort it out.

The APN points to MOGO servers as expected by design, but problem is that their servers are located in Taiwan, therefore all your connections go to Taiwan before reaching anything else. This creates a lot of delay, therefore VoIP, WiFi calling is of a poor quality.
At least not fully censored by China, so you can use FB, etc.
In general, will consider alternatives for my next trip.