T-address? help

Hello, I started digging zcash with nanopool, i made a wallet bittrex, and when I insert my address into nanopool.org it says the account was not found, please help. Thanks
And what this means "Only public addresses (t-addr) are now supported."

I don't know anything about nanopool but I've noticed similar messages on Zcash explorers when a new address (with no balance) is entered. Zcash offers t-addresses, which have publicly viewable histories like bitcoin, and z-addresses, which are private.