P: Mobile (iOS): Not saving photos

Thanks for the updated information.  I see in your original post these are HDR images. Sometimes those take a while to process in the background with the app open.  Obviously, at least one of them should have had time to process by following the search steps above and I am guessing you haven't seen a single one come in.

Let's dig a little deeper.

Was Lightroom Camera launched from inside the app or via Force-touch on the Icon (or possibly the lock screen widget (Home>Swipe Right)
How close together, time-wise, were the captures? 
How long was Lightroom CC open?
Did Lightroom CC crash after snapping the first shot?
Did you force quit it via iOS force-quit gestures at any time?

Thanks, Rikk. Followed all your instructions. No pix.

LR Mobile v.3.2.1.674202 [BUT I was one release out yesterday when I shot the photos that did not save; as a number of apps updated this morning including LR. ] 

iOS 11.3

About 6 pix were not saved \ are missing.

I do appreciate your help!

Don

Don,

Let's do a little detective work and see if we can locate them.

Inside the Lightroom app, tap on the All Photos album 
Tap the [ ... ] icon and choose "Sort by Capture Date" and make the sort go from most recent to oldest.
Next tap the [Funnel] icon; review the filter settings and make certain that you haven't inadvertently set a filter that would prevent their showing. 
Review the grid of the All Photos album - do the pictures show up?

If not, exit out of the Album View and tap the [Lr] icon and then "About Lightroom"
What is the version number listed at the top?
What is your iOS version number? 
How many photos do you suspect are missing?

Looks like a big bug then...

LR Mobile

Have you checked the « All pictures » counter?

When you say « Adobe app », you mean LR Mobile or a synced app?