Are codex isn't working with Oppo when playing Blu-Ray

Unless you use the RCA outs on the Oppo (I’m assuming your unit is not the 105 model), SACD and Blu Rays will not work with the optical out. In other words, only red book CDs can be played through the optical out with the Oppo (I believe their high end 105 model supports USB out and does not suffer this limitation...but I’m not sure). Apparently, this is due to licensing restrictions. It’s actually written in the manually, if memory recalls. Try the RCA outputs, it should work (of course the drawback here is you have use the built in DAC of the player). If you want digital out, you’re going to either have to buy a different player or use the HDMI output somehow. It’s one of the reasons why the lower end Oppo is much cheaper than other brands that support SACDs. Hope that helps.

When you say adjust, do mean from the options menu?  I would try unplugging the power cord  from the Oppo player, connecting it to a TV, set it to factory settings, power it down again and then try it again. Btw, does CDs work? Unless it's your amp, which I doubt it's probably your player.  If this doesn't work, I would reach out to Oppo for support. The stereo RCA output should work directly connected to your Rogue.