I'm having the same problem.
I never used the \"Dropbox API Explorer\" but every Token i generate via App Console expires after 4 hours.
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Thanks a lot!
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I have the same problem and I did use the Generate button in the app console. Mine also starts with \"sl.\" I know this is an older question but hopefully someone is monitoring this.
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Apps can still get long-term access by requesting \"offline\" access though, in which case the app receives a \"refresh token\" that can be used to retrieve new short-lived access tokens as needed, without further manual user intervention. Refresh tokens do not expire automatically and can be used repeatedly. You can find more information in the OAuth Guide and authorization documentation. There's a basic outline of processing this flow in this blog post which may serve as a useful example.
Same proplem with Generate access token via AppConsole
https://dropbox.tech/developers/generate-an-access-token-for-your-own-account
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