I got some a while back just after shards got released and then I bought some packs for Easter and got 300 shards but when I went and checked none of them were there
April 2020 - last edited April 2020
Like was mentioned before, is it possible you may have mixed up the heirloom shards with something else? While not impossible, pulling 2 chunks of heirloom shards in a short amount of time would be extremely lucky. Could they have been crafting metals instead of shards?
If you're positive that you had the shards, and they've vanished without actually spending them on an heirloom I'd recommend getting in touch with the EA Help team so they can take a look. I'm afraid that we don't have a way to help out with missing content here on Answers HQ.
I lost them too and EA wouldn't allow me to get them back, unfortunately there is supposedly no fix for this issue