Seems like there is a smaller problem with too low difficulty on BTA. It might require, that i setup a dedicated port for BTA in order to keep the miners, even on low difficulty, on the BTA stratum.
I will check this today and post here later

Thanks for the update.
cryptohamstr.com
1% pool fee
stratum: -a sha256 -o stratum+tcp://stratum.cryptohamstr.com:3334 -u ADDR -p c=BTA
You can use c=BTA,d=X in order to change your miners difficulty.
I did dedicated port (only BTA on SHA256) on port 3334. If you only want to mine BTA (without difficulty problem) please switch your miners to new port. After some blocks i will check that payouts/balances are right.