I'm having a similar issue.  Moved over from Nicehash when it went down and have been trying to get my machines back up and running ever since. 
Installed Awesome Miner and pointed it to Zpool, fired it up and all looked great until I saw that the site reported that I was earning BCH not BTC. 
Not sure where the currency is specified, but I want to be paid in BTC not BCH.

Can anyone help?

see:  http://zpool.ca/?address=1HrMPhbKT2droKxfjocc65SPvrCyy1yQcs