Upgrade ? What sort of upgrade ? If they happen to be rigging the seeds to make players lose more , then there is really no way to prove it, unless someone can do simulations and show that the current seeds tend to generate more losses to the player. Since there is no way to prove, so if they happen to be rigging the seeds, then I doubt they will remove it as it will keep generating them extra income.
Maybe someone who is good at coding should take a look at their provably fair algorithm and run a few seeds for 20 hands - 30 hands. That way it can be realized if they are inclined to make the dealer win much more than the bettor.
ABSOLUTE WORST Black Jack ever. At least with other sites you go on a run. Here it's lose six push lose ten,, win one. So many complaints. They should be banned
If the way they rig the seeds is through the default ones ,then you should manage to make it fair by changing the default client seed that is set for your account. That way it will be random .