You should get a box asking for credentials, if you don't then something is blocking it or the config file on the PC with wallet has incorrect details.
Post your .conf file. Do you have the wallet open also.
All I get is "new block detected" in cmd window.
Also was does "no suitable long poll found" etc. mean?
Congratulation, you are solo mining , as I can see with latest miner, how does it feel to loose virginity .
For info about miner output, go to miner github (ie sgminer5), read readme and documentation, there is everything explained in details, or just use google.
If you find block, you'll see it immed. in your wallet. Your miner will show you "Found block for ....".