Sponsored issue tracker is an external issue tracker associated with your BugDigger service subscription. When you sponsor an issue tracker, any user sending a bug report to your project on the issue tracker is covered by your subscription. For more details see Users on your account.
The sponsored issue tracker is usually selected at the time of subscription plan purchase but can also be selected (or changed) later.
Sign-in in to BugDigger.
Open the Integration page and add new issue tracker account you want to use.
Open the Subscription page. (Option in the drop down menu below your user name.)
Select active subscription.
Find "Change sponsored issue tracker" section, select desired issue tracker account and click Update.