Copying my reply from the other site:
Please sync the computer version and make sure ‘media sync complete’ appears there first. If it does, please log in to AnkiWeb and check that images show up when studying there. If they do, please sync AnkiMobile once more and wait for ‘media sync complete’. If issues persist after that, please point me to a particular card in your collection that is not showing images, and I’ll look it up.