Transmogrify/Appearance Issues

Not really sure if this is even the right place to post this/ask this question but I’m just trying to figure out what’s wrong.

I’m unable to transmogrify several appearances I’ve collected (the same armor type/cosmetic) at a transmogrifier. For example, I have seven pages of chest appearances collected, and they say visit a transmogrifier to use this appearance but when I go to I only have four pages of options.

I’m unable to use any of the lunar festival cosmetic items I’ve collected, and I know they can be used because I’ve seen other players transmog their head pieces/chest pieces. Even a staff appearance I had just used previously has disappeared and don’t show up anymore. Does anyone else have this problem, or am I not doing something right??

Did you only recently purchase those transmogs, especially the Lunar Festival items?
Because the #1 mistake players make is not realizing that the sellback tag still being on the item means there will be transmog restrictions (namely with characters who didn’t buy the physical item) until the sellback tag is removed, either by stuffing it into void storage or destroying it.

Are you saying that to get an item to appear for Transmogging, I should equip the item, unequip it, and then destroy or void store it?
Because, if so, that does not appear to work for Black Mageweave Gloves.