I got a Minecraft realms subscription and it charged me 8 dollars because I already did 

the free trial and I try and make a realm and it will not let me make on error picture included 

I made sure I was sighed in to my Microsoft account I tried a on a different device to.

I’m on a 2018 iPad with iOS 14.4 and the other device was a iPhone SE 1st gen.

there is no way to reproduce it.