Notice that on Sony G-series SD cards it is two slight different specs: non T (non Tough) and T (Tough).
Few difference between them I have found out is:
SF-G (non T):
Shockproof, Temperature Extremes, Waterproof, X-Ray Proof
Shockproof, Temperature Extremes, Waterproof, X-Ray Proof Dustproof, Magnet-Proof, Static Proof, UV Light Resistant
That is one reason why the Tough SD card is little more expensive, I use SF-64GT but it is also availabl
I have now contacted the reseller Scandinavian Photo and I selected to use my consumer right to just return the camera and lens, and then get a another brand new X-T4 and lens (as a package, as I originally bought it first time) from them. That way I avoid any discussion on a warranty situation. The person at Scandinavian Photo was very friendly and said that will be fine do so so.
I want to give Fujifilm a second chance, but if same problem with the new X-T4 camera I will get next week I will