Challenges activating esim. Got a new iPhone which is eSIM only, so tried switching from physical sim to eSIM. Every time the thing fails partway through. I am on attempt four, but now being told I need to go into Curry’s… very annoying.

What am I doing wrong here? Is there some secret setting I need to flick on my phone to stand any chance of the eSIM activating? I get a failure message, and of course as the eSIM QR only works once, I had to contact live chat which takes quite a while (I’m grateful for the help, but… sending me to curry’s is not really helpful)