Remote access using Netgear R8000

I have set up an address reservation for my Tablo private IP address and then configured port forwarding for both public/private port combinations given by my Tablo App. When I uncheck the remote access and then recheck it, I’m still getting “requires manual configuration” message and sometimes even get different public/private port combinations then what was given to me the first time. UPnP is on. Anyone have any ideas on what I’m doing wrong?