If you're posting here on the same device, I'm assuming you have internet otherwise the most common cause of no maps showing is being offline but not the selecting offline map layer. Otherwise there have been quite a few updates in the last few weeks. Are you up to date? Have you cleared cache etc, not downloaded the offline maps but actually in offline mode ?
I cannot run Wikicamps on my laptop any more - something to do with a change by Microsoft apparently. Had trouble on the tablet showing only a few icons but sorted by uninstalling and reinstalling. All good now.
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'Once you are infected with the travel bug you have it for the rest of your life - there is NO cure'