What version of MacOS and catalyst are you using?

You need to install the latest drivers from decklink website
You can only use ONE input at a time - not both - this is a limitation of the Decklink drivers - not catalyst.
Set the input options to HDMI in system preferences.

When you start catalyst, you should see various resolution options at the top of the video inputs menu
BEWARE - HDMI input is VERY FUSSY about the input resolution - it has to be EXACTLY correct refresh rate to work...

If you want to use both SDI and HDMI, then you will need 2x cards.
We use multiple decklink intensity Pro - works fine with the same drivers - but is VERY FUSSY about the format of the HDMI signal.
not tried with Intensity Pro + Extreme3D

However - we do use IntensityPro + Active Silicon Phoenix SD/HD-SDI cards successfully all the time.

S