Please help me. I am desperated.

I generated a coin and want to use my KNJ Jupiter to mine.

I edited the coin.conf file to:

rpcuser=testcoin
rpcpassword=testpass
addnode=54.194.99.126
rpcallowip=127.0.0.1
rpcallowip=Miner IP
rpcport=9902
daemon=1
server=1
listen=1
gen=0

In cgminer settings of KNC Jupiter I set:
Pool: PC IP:9902
user= rpcuser
pass= rpcpassword

Save + restart miner = Connect to Miner API failed

What did I miss ? Sorry, I am a dummy.
Any help appreciated...