Mastery and Hypersharda

One set of my hypershards are missing, specifically the ones from beating mastery like 2+ years ago. I see new C8 mastery was added - did they take away the shards, or am i victim to a glitch?

C8 Mastery just gives a new type hyper shard, I don't think it takes away the old Hyper Shards. Most likely you're a victim to a glitch, as there are multiple reports of players missing some of their Hyper Shards too with CG also confirming the problem.

You might want to sent a ticket about it here - https://chromatic.zendesk.com/hc/en-us.

pretty sure its a glich, tho i wrote a guide on steam on how to be ABSOLUTELY sure you lost a hypershard

https://steamcommunity.com/sharedfiles/filedetails/?id=2657823731&searchtext=hypershard 

here, take a look at it if y want, make sure you have all mastery hypers and all prime hypers forthe eaziest time, etc etc, hope it helps