The Adjustment Brush for my ios Lightroom app doesnt work anymore And I have the paid version. I can select the brush tool and it leaves a Diamond marker on my photo but no red mask shows up. I checked to see if I accidentally hid the mask color or if the flow was too low but flow and opacity are 100 and the autoshow red mask color is checked on. Could it be that Adj Brush can only be used on raw files? The other adjustment tools work fine on my jpeg images which were all brought into my phone via Nikon SnapBridg wifi transfer? Thx for any help.