I am presumably very late on to this problem but I was just checking links on my LinkedIn profile and realised both of my public badge account links were broken.
My Credly link was relatively easily fixed, by going in to my account I could get a new link to show my profile with 1 badge (from the LPI).
My older Mozilla Backpack that had a variety of random badges attached, however, seems to have gone. The help page is, well, not very helpful:
I didn’t get an email notification from Mozilla. What should I do?
Do you have more than one email address that the zipped file could have been sent to?
Have you checked your spam folder for the email?
Unfortunately, we’re sorry to say, there is no way to resend the Mozilla email containing your badges. If not, you may wish to contact the original issuer(s) of the badge(s) that were in your backpack, to see if they can provide you with a copy of the badge or re-award it to you.
Badgr support
I knew Badgr was taking over from Mozilla (actually quite a while ago, in 2019, looking at their website) but had not realised that my badges would be basically gone. The link I had saved no longer displaying anything useful. Now I know, as I used bit.ly, only three people have actually followed the link from LinkedIn but even still, it will have looked a bit bad that I had broken links on my LinkedIn profile without realising. More care needed in keeping an eye on my profile I guess!
I have been an advocate for Open Badges but this really seems a shoddy situation and one that reminds us yet again about the risks of relying on online services (as opposed to having offline records such as CVs, certificates, etc for such achievements).