Glad you got your coins out. That is what I had to do eventually when I couldn't get any fiat out and I couldn't get a response from camp bx. I really don't know what their story is. They just don't seem to care about the business at all and if that's true they could take your BTC one day and that would be the end of your account.
I think about third party services everyday and how to solve these problems. Think about the silk road vendors that were selling
legal wares in their own jurisdictions that just had their coin auctioned off. If your exchange participates in money laundering or any other activity that the local government deems unsavory; innocent users may just get their BTC seized. Of course this is notwithstanding internal thefts and hacks that are pretty fucking commonplace.
I'm happy that it worked out well for me; but for every good ending there are several others that do not end as well. All in all, I am very pleased with my personal outcome. However, I am in the minority of people with satisfactory results amidst this type of activity.
FWIW, I never got a helpful response from Keyur or any other Bx employee. I worked it out myself. I know of a few people that had their API keys revoked trying to withdraw BTC from Bx. It is the wild west insofar as third party services are concerned and consumers should beware. One year ago, I hoped we would stop hearing about this BS. If we hope for greater adoption, increased value, and safe access; we must find a safer alternative than the ones that currently exist.