Hi there!
I have one dropbox integration app whritten in PHP.
Some time ago I get a letter drom Dropbox support team with the text about using refresh tokens and supporting short-lived access token. And there was info than long-lived acces token will be supported just to September 2021and no more.
I use OAuth2 Php Client for my Dropbox integration (https://github.com/thephpleague/oauth2-client and https://github.com/stevenmaguire/oauth2-dropbox ).
My acces token is dynamic generated but in responses from my oauth 2 libs i have not any refresh token ar refresh time.
Is access token from than libs long-lived access token? And how can I obtain refresh token?