I was trading in IDEX since six months, i never faced any issue.
You did not face any problem because you are lucky enough or because you were not the chosen one, but other peoples did not feel the same thing.
talking about shady exchange, i just remembered Poloniex. a lot of people were angry because they did a lot of shady thing just like unclosed margin,withdrawal issue and many more.
but some people were defending it because they were fine with it, but now ? everything is revealed and users moved out of that exchange
in the end, there is no fire without smoke.
always see the thing from two different view.
