All apps updated. Sync between 1 Mac and two iPhones and a1 iPad using Dropbox. One of the iPhones does not stay in sync. What to do?
I'm sorry to hear you're having some difficulty getting things synced through Dropbox. We have a guide I'd encourage you to work through that contains the extent of our Dropbox troubleshooting knowledge, here:
Working through the steps outlined in the guide gets things working in the vast majority of cases. If it doesn't, there are some recommendations we can make. Please give it a try and let me know how it turns out.