I have joined to see how the horse racing game would work, I usually like those type of things very much and try to have fun with it, I have played similar ones way back when there were another website like it but it is no longer available so I was happy to see similar game exist again.
I have to say few things about it, first of all if you are playing it believing that you could make anything other than "better looking dice game" you are not playing the right game, these are not real horses and thanks to provably fair you are getting animation on top of your dice game that is it, just information for people who do not understand how it works. Secondly, when you are wagering the amount you put in doesn't show, even though it changes you can't see it, that needs to be fixed. Aside from that, it is exactly how I imagined and I really liked it.
Have you ever tried to withdraw and deposit on it? I'm kinda interested since I've seen that the OP have multiple negative red trust saying that his casino is a scam and does not really a fair casino.
I have not had to deal with this place as horse racing isn't my thing but just relating to your question regarding withdrawal, I think best to overall stay away from places with red flags and negative trust, specially when you're not sure. The things is that there are so many more casinos where you can spend your money, so if you're not sure about one place, well, there are plenty more!
Also, a way to verify the negative trust and scam accusation against this casino is to read the thread and look at the response provided if any. That should give you an idea.