Timeout for request to Dropbox API

Hi Jim, there are definitely two different issues here, so I'll address them separately. (They're both to do with the Dropbox Developer Platform though so this is a correct place to ask for help.)

1. The error "The request to link the app is invalid" occurs on the /oauth/authorize step of the OAuth 1 app authorization flow:

https://www.dropbox.com/developers/core/docs#authorize

This error should indicate that the 'oauth_token' parameter is missing or invalid. For example, the following URLs will display this error:

- because there is no 'oauth_token' parameter:
https://www.dropbox.com/1/oauth/authorize

- because the 'oauth_token' parameter contains an invalid request token:
https://www.dropbox.com/1/oauth/authorize?oauth_token=notarealrequesttoken

The 'oauth_token' parameter needs to contain a valid request token retrieved from /oauth/request_token:

https://www.dropbox.com/developers/core/docs#request-token

To investigate that issue, the first step would be to get a sample URL of the /oauth/authorize page that produces that error. (I believe a redirect happens with that error though, so make sure to get the original /oauth/authorize URL, not the redirected /home URL.)

2. The "timeout for request to ... /files/move" issue sounds unrelated, as that's an entirely different endpoint. As you said, it is possible it's due to his network connection (or anything that may be interfering with it) or possibly an issue on our servers. If it's transient and not reproducible, it's likely the former. The best practice for API apps is to do some automatic retrying anyway, since there are plenty of ways for things to fail like that, due to network conditions, etc. If it's reliably reproducible though, and other API calls don't fail, that would indicate an issue on our side. In that case, if you could share steps to reproduce the issue and a sample request/response, we can look into it. (Just be sure to redact any secret values, e.g., the access token.) You can also open an API ticket if you'd prefer to share privately: https://www.dropbox.com/developers/contact

Hope this helps!