Are you running any firewall? The guides don't mention allowing the extra port added with rpcport commands called for in the sentinel part of the guide. In my understanding - this rpcport command is an option used when you want a custom port for that - it should just use the default port coded into the software. Many times I haven't included these rpcport commands and all works well -but- here with the addition of Sentinel and the Sentinel code being clipped right from DASH, the code might be defaulting to a port used by DASH - So a mis-match with native Innova code. The rpcport commands in both .conf files would be important to allow the rpc crosstalk. (just fishing for your problem..)
I have gotten another reward just less than 12hrs from previous. Crossed fingers and best luck to others.
have missed about 3 rewards (30 coins) while hacking through all this...