I have a Bearer Token that I got (I don't remember how) a few years ago, a Token that I would now like to change for security reasons. In the web interface, I can't find anywhere to generate a new Token (I don't have any app created and I have a token that currently works). Can I create a new Token and deactivate the old one (or not)? Thanks in advance for your feedback
You can deactivate old one, but cannot create new long lived access token! Long lived access token issuing is dropped for long time already. For long term access you need to handle refresh token and short lived access token.
@K2R400 Здравко is correct; you can revoke an existing access token. One way to do so is to call /2/auth/token/revoke using the access token. (You can use the API v2 Explorer to make the call if you want.) Note that this can't be undone.
And as they said, Dropbox now issues short-lived access tokens, not long-lived access tokens. For long-term access, apps should use refresh tokens. Refer to the following resources for information on the current authorization functionality that you can use to get new access tokens and refresh tokens:
