None of that works as I don't see the screens or options there. I suspect that this is a bug in iOS related to the physical SIM settings when removing eSIMs.
FYI I have managed to resolve it now. I requested an eSIM from Three, removed the physical SIM, installed the eSIM instead and everything is working now.
Delighted to hear that the eSIM is now working for you.
I am unable to send text message I have iPhone 14 and when I send a text it says not delivered
Hey @Adam_40402 , thanks for commenting here and I'd love to help, when you are trying to send messages are these iMessages or SMS?