I've tried PD and honestly the design is so shit from the PD4 redesign. Honestly I wouldn't recommend you using it.
I have no idea what you are talking about.Are you really reading what the thread says. What is the problem with PD from what i know is prime dice and it is one the only dice site i am rolling most of the time if i really wanted to play some dice and that is simply because of the simple design.
And for the OP i have no idea and have never tried Chain-Bet.com