Issues on third party applications, and issues with the ESI (EVE Swagger Interface) have to be troubleshot with the developers of these applications.
The best place to receive assistance for third party applications is the #esi and #devfleet channels of the tweetfleet slack.
Access to those channels is run by the players. You can get a tweetfleet slack invite right here:
The CCP developers who work on ESI coordinate with the third party developer community on tweetfleet slack, and you'll find the most up to date information available there.
Please note that as this service is moderated by a third party, CCP cannot be held responsible for content on this service.