This has been a constant problem since the packs first came out (except the hair which works perfectly). I select jewellery and today, some different markings, and once I changed zone, they all reverted back to my character's original. I've spent money on these and they still are not working correctly...
...at least, not on my own screen. Other players seem to still see them, but I don't. Perhaps something amiss in client-side code? I'd love to see this fixed as I enjoy changing stuff around a lot.
RIP Atherton, my beautiful little gentle friend, my Shining Light. I will miss you forever. Without you I am a hollow shell.