I have a Freedome subscription, but it doesn’t work on my iOS devices, when connected to Sense. Works fine with my laptop.
Problem solved. My Sense is connected to a Sagemcom modem and had to do this; https://community.f-secure.com/t5/F-Secure/Freedome-cannot-establish-a-VPN/ta-p/85596
On android and windows pc the freedome works just fine when connected to sense network.
So either there's just issue with your setup or on ios generally.