It seems that reopening the eclipse workspace after a long time welcomes the user with a ton of "403 forbidden errors". After investigating a bit I noticed that this isn't caused by credentials not being saved correctly as validating them doesn't fix this.

However, when you have the list of trackers in the modal dialog, there is a refresh button that can pressed and upon pressing it the connector refreshes its current configuration, as well as receiving all the available trackers from the server. When doing so, I think that's where the connector refreshes its token for further api calls, so that's probably why refreshing the trackers fixes the issue.

I don't know if it was working before, or if the api changed since then (expiration added?) but this should be fixed as users might find themselves blocked with a non-working connector with no easy way to make it work.