Disqus customer support is non existent [Blogger comment synchronization broken]

I have enabled Disqus comments on this blog and it is supposed to work like this: every old comment from Blogger has to be imported into Disqus and every new comment from Disqus needs to be also saved in the Blogger system. Importing works just fine, but "syncing" does not. Every time someone posts a comment I receive this email:

Hi siderite,
 
You are receiving this email because you've chosen to sync your
comments on Disqus with your Blogger blog. Unfortunately, we were not
able to access this blog.
 
This may happen if you've revoked access to Disqus. To re-enable,
please visit:
https://siderite.disqus.com/admin/discussions/import/platform/blogger/
 
Thanks,
The Disqus Team

Of course, I have not revoked any access, but I "reenable" just the same only to be presented with a link to resync that doesn't work. I mean, it is so crappy that it returns the javascript error "e._ajax is undefined" for a line where e._ajax is used instead of e.ajax and even if that would have worked, it uses a config object that is not defined.

It doesn't really matter, because the ajax call just accesses (well, it should access) https://siderite.disqus.com/admin/discussions/import/platform/blogger/resync/. And guess what happens when I go there: I receive an email that the Disqus access in Blogger has been revoked.

No reply for the Disqus team for months, for me or anybody else having this problem. They have a silly page that explains that, of course, they are not at fault, Blogger did some refactoring and broke their system. Yeah, I believe that. They probably renamed the ajax function in jQuery as well. Damn Google!