in the Lightroom app for iPad, there is no "Sync Issues" folder -- I mentioned the LR Web site, in case that might help give some clues about LR iOS.
Could you please send us a diagnostic log from the Lightroom app. To do this, go to app settings, and select Help & Support, and on the next screen long-press on the text "Access our Support Forum." After holding your finger down on this text for 5 seconds or so, Lightroom will open a new email and attach a log file and fill in our email address for you. (This requires you have the iOS Mail app setup.) Please just add a short note mentioning your forums post here, so we know your diagnostic log relates to this issue. Thank you!