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After your data has been migrated to 1Password 4 for iOS, you can begin to set up your Dropbox login for syncing again. Once installed, tap on “I’ve used 1Password before” and move your data in from 1Password 3. So the solution they have suggested in their blog is to upgrade to 1Password 4 for iOS (cost $17.99 as of now) in order to continue syncing with Dropbox (and of course with a lot more new features). According to the 1Password team, it’s because Dropbox has made some changes to their API, making it impossible to syn using 1Password 3. If you have 1Password Pro or 1Password 3 installed (only if you have them installed beforehand, otherwise this solution is not for you) on your iPad or iPhone, you will no longer be able to use it for Dropbox Login. Dropbox Login (Mobile) Failed with 1Password – iPhone or iPad Dropbox and the Dropbox logo are trademarks of Dropbox, Inc.
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