I think they assign that qual to people based on their performance on the non-qual batches. I'm not sure how often they post those batches, though. Just keep an eye out for stuff from them that you can do and maybe it will lead to that qual.
That's an exclusion qual. Requesters will often assign quals like that if they want to temporarily prevent people from working on their HITs. That might be due to the requester only wanting a certain number of submissions from each worker or it could be due to performance. It says it's no longer granted because they've removed it, allowing you to work on their HITs again.