I have not received my new sim yet, but from the updated users guide, it seems like they are going a different route. Quite a number of things are similar to the IOM sims. There is even mention of a UK number, so...
http://www.yackiemobile.com/files/userguide.pdf
Edit: The rates are now totally different.
http://www.yackiemobile.com/main/rates/
Phones: Xiaomi Mi Mix 2, Samsung Galaxy A50, ASUS zenfone 3,
Sim cards: AT&T (Contract), 3 UK, Piranha Mobile