Network doesn't show on phone?

So, I'm a brand new customer. Last week I brought my already owned Samsung S9 to the kiosk in Place D'Orleans in Ottawa, where they ported my phone number from Rogers, gave me a sim, etc. I seem to be connected to the network, I can call and text, get LTE data etc.

What's bugging me is that my screen isn't showing the network. From what I read, I should have "VIDEOTRON" on the top line of my phone. This was not a problem before, "ROGERS" always appeared.

I was just roaming in New York this weekend, and not once did any of the "PRTNR" networks ever show up on the top line either, which the tech support documents say should appear. Connections were very spotty, I had to restart my phone numerous times to get data working, so I'm unsure if this is related.

Is there something misconfigured in my phone?