First of all, you won't get any bonus with XCR. 1 XCR will always count as 1300 satoshi without any bonus. Additionally, I personally contacted Bter and Poloniex a few days ago and asked them to take a look at Crypti, i.e. the XCR withdrawal isn't working correctly. Please note that Bter is sitting somewhere in China and Poloniex is a cabin in the woods of the UK afaik. I can only do the same as you, contact them and hope for the best.

The ICO is still running for over 3 weeks. I'm sure in that time frame Poloniex at least will work again.

Thanks for the reply.
As for the bonus, I think you misunderstood what I meant. I know that XCR doesn't get a bonus, but if it's clogged up forever on an exchange, I'd pay in btc to get the bonus... so timing there does matter.
But like magic, a short time after I made this post, my Polo coin went from pending to sent. So I guess it's just unusually sluggish (sending btc was like a speed demon in comparison). So at least Polo does seem to work, albeit a bit slow.
Not sure about Bter, I got stuck there, another user here PMed me about it, and he was stuck there too the other day.... guess safest route is to avoid Bter if you can.