Can't modify anything on my External SD Card topic

As the title says & I can't even save pictures to my SD card.

I'm running Android 5.0 via Cloudy G3 2.0. I didn't have this issue when I was stock I don't know if the problem is related to Cloudy G3 as I did adb push a file to my phone (moments before I installed the custom rom) and I have read that doing so messes up permissions regarding the SD Card.

I have done a Google search but nothing relevant is coming up regarding Android 5.0

I'd greatly appreciate it if help could be provided, thanks in advance!