I suppose this pool is for ASICs and nicehash only. Mining difficulty is very high.
You can change difficulty, or it will automatically change after a while. add <,d=YOURDIFF> after C=TRLN in password field.
Honestly, im not sure if there is a reason for mining scrypt with anything else than ASIC these days..
Even if I set a ,d=2 i can't mine a share ... the dashboard reports
sgminer/5.5.5-gm C=TRLN,d=2 scrypt 26214
I think we can use only ASIC miner