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 add 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.
Thanks, I will give the new settings a go soon.
All the best.