Version 6. for iPad. Version 4.4 and 5.0.2 for my iMac. I have tried many times to get rid on version 4.4 on my iMac with no luck. Is that the cause for the sync problem? Also, autofill used to work when I logged in to Costco Photo now it doesn't. I don't know if I sync with iCloud, wifi or dropbox. All of this is way too complicated. Please help.