Thanks Jon, Badgr is now the active external backpack on moodle.org.
For details of how to change to using Badgr on your Moodle 3.7 site, please see the section 'Enabling Badgr as the active external backpack' in the documentation Badges settings. Until this change is made, users won't be able to connect to their backpack or display badges from their backpack in their profile.
For 3.6 sites, users will be able to send their badges to Badgr.io automatically (no change is needed). However, any badges in a user's Open Badges backpack will no longer be displayed in their profile.