DT3 Not Syncinig

I’ve installed DT3 on my new MacBook Air (2018) and now my database store on Dropbox (HomeDepot.dtCloud, aka Joe Kissel) isn’t syncing with my DPTO on my iPad Pro (2018) nor on my iPhone 8+. Neither of those DPTO databases seem to be syncing either & there are items in all 3 Inboxes that are different. My DT3 Database is my best & most complete one but I hate to lose items in my iPad & iPhone databases, so I’m hesitant to just delete my DPTO installations to rebuild, but I may have to do that. Any suggestions? Thanks!

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Also, DEVONthink 3 is in beta testing, not an “early access program”. It is meant for testing, finding and reporting bugs. It should not be used in mission-critical or production environments. Also, we advocate running it on a separate macOS user account with test data or copies of data.