From what I understand you can't access your account on ijoomla.com? and you can't reply to ticket there?
This is my response to that ticket:
When one media is clicked from that modal page, we made an ajax call request to this file:
but this request return:
500 Internal Server Error
Please, can you contact your hosting support and tell them about this, maybe there is a restriction for ajax call request. If there is not a protection, please provide us ftp access (host and username/password) to check this component files.