HELP! Trying to activate my GoogleFi Data-Only Physical SIM Card in my Travel iPhone

Hello friends!

I decided to buy a secondary phone to use when traveling internationally in case my primary was lost or stolen. I have GoogleFi cellular data on my primary phone with a phone number. You can also purchase a data-only SIM to insert and activate on your account to pull from your data. You don't have a phone number on the 2nd phone but you have access to all your apps and stuff you would have access to on Wi-Fi. Just no cellular texts or calls. Everything points to the fact that i should be able to use this SIM card in my Apple iPhone 11Pro. But my only option when I try to activate the Cellular by updating the settings is "Set Up Cellular" which is not what you want to do. I do not want to transfer my number to this phone. I have contacted GoogleFi support and they have confirmed everything is good to go on their end and my phone is compatible. There must be a setting that is off. I have searched articles. It also does not look like contacting apple support is an option for me. So hoping someone might have some advice.

Much appreciated in advance!

Cheers

Carrie