FWIW, I entered the nicehash configurations in exactly the same way and haven't had any issues.
[EDIT] just clarifying the point about the BTC address and the entry to the URL. Think I misunderstood what you meant about typing the address in.
did you type in the address as
stratum+tcp://solo.ckpool.org:3333
or did you leave out the first bit? maybe that could be causing a problem
Also with the name you gave your miner did you include a . and no space in the naming? like mine, see i have the address then a . and its named S9 worker 1 (and yeah i pulled a few digits out of the address)
1PBchjo22ED1kyi5vRaiEcpCKn.S9w1
and the address to check your miner
http://solo.ckpool.org/users/Your Wallet Address