Shared link not able to jump to app but browser instead

Hi all, there are many videos on discord which shared with dropbox, those links direct to the app before. But recently once I click the link on discord it jumps to the browser instead of app.
When I choose 'view in app' on website, it says: If you've downloaded Dropbox for Android and you continue to see this window, change the default settings in Settings. You can clear default settings by following these steps: Settings > App settings > Your browser > Clear defaults.
However I'm not able to find these settings in dropbox. I've tried re-download the app but the problem still exists.