Not clear what the OP motives are probably wanted to warn about the ongoing lawsuit against the fortunejack too make sure no other people would have a problem like this but no one is for sure but for me, if there is something like this happening and it is not yet clear, it might be safer to stay cautious on the FJ or play with only average money until the allegations have been cleared.
I didn't take the OP's problem too seriously, only until now I bet that FJ doesn't have any problems.
Here I don't want to side with anyone but I'm just saying from my own experience and maybe this problem is only the FJ and OP who know the truth.
I think if you say always be careful and use small amounts of money in FJ, it's only one-sided thinking.
What is more thorough is when using all online sites always use money that can afford to lose.