Every time I try to view my earned achievements, I get a message saying "There are no unretired achievements in this category, click on 'retired' above to view the achievements in this category.". What should I do?

; i believe you can only see the "earned" achievements only when you complete all of the required tiers for it. until then they can be viewed under "all" and "inprogress" which are basically the same thing.

I'm thinking what the thing is is that it's searching in a category where all the Achievements are retired? Try changing category and see if that matters?

This is hard because I have the majority of the ones out there and you only have a few so I'm not sure if it's a glitch or a feature. Among the Newest which is the default category for me, most of the ones there are expensive to get or hard to get if you're new to the site, so it may be the only one you can see is the one retired one from the latest plot.