Hi from Oulu, Finland,
Just the same behavior than on Peter's video some days ago. (Thanks for that.)
Our Moodle is a bit different version Moodle 3.4.1 (Build: 20180115) with HTTPS.
Showing badges from the Mozilla Backpack seems to work OK.
On Username (from the right up corner) -Preferences - Backpack settings...
Status : Connected
Email address : antti.XXXX@XXXmail.com (<---This is my Mozilla Backpack-email address in plain text link)
Badge import settings
Select collections from your backpack to display on this site: (Ticked)
Only public collections are shown, visit your backpack to create more public collections.
So, everything seems to be OK, so this part of the badge connection works ...
If I browse on Mozilla web-page... Backpack says: "No issuers of open badges are currently connected"
Back to Moodle... Manage Badges...
When I click small rucksack-icon below the badge in Moodle. PopUp window says:
"You are about to send 1 badge to your Backpack at backpack.openbadges.org.
This is not working. - Just the same problem than Peter has.
Hopefully somebody can figure out what is broken - or has gone broken on some updates - and fix it. Students are waiting their badges.