These answers were given on the (now closed) Feedback site-
"This can happen for a few reasons. First try signing out of your account and sign back in. Otherwise see if any of these are causing it.
- your device is running out of storage
- You have a storage cleaner app running on your device
- You have switched the storage location in Lightroom settings
- You don't have an original or smart preview downloaded to your device" Rikk Flohr
"please tap on the cloud icon, it normally should give you some kind of information what it could be." Ignacio.
Regards. My System: Windows-11, Lightroom-Classic 15.4.1, Photoshop 27.8, ACR 18.4, Lightroom 9.4, Lr-iOS 10.4.0, Bridge 16.0.3 .