Cards are missing

Hello, i’ve recently came back from 3 years break from hearthstone and i spotted most my wild collection cards is just gone, especially from last collection as: Goblin and Gnomes, The Grand Tournament, Journey to Ungoro, Kobolds and Catacombs, Whispers of old Gods, Caverns of Times, Mean Streets of Gagetzan.

I’ve wrote all the cards below that i remember to have and play them.

Druid: Forbidden Ancient, Anodized Robo Cub, Grove Tender, Mulch, Famdral Stagheim, Lunar Vision, Dark Whispers, Recycle, Three of Life.
Hunter: Lock and Load, Call Pet, Dart Trap, Dinomancy, Augmented Porcupine, Stablemaster.
Mage: Forbidden Flame, Open the Waygate, Fallen Hero, Snowchugger, Chenvalla, Mana Bind, Echo of Medivh, Potion of Illusion, Wee Spellstopper, Dragon’s Fury, Servant of Yogg Saron, Coldrarra Drake, Meteor, Toki Time-Tinker.
Paladin: Meanstreet Marshal, Argent Braggark, Primalfin Champion, Seal of Light, Sir Finley of the Sands, Enter the Coliseum, Scarlett Purifier.
Priest: Forbidden Shaping, Light of Naaru, Powerd Word : Glory, Confuse, Embrace the Shadow, Shadowboxer, Shadowfiend, Shadowform, Shrinkmaster, Power Word: Tentacles.
Rogue: Kingsbane, Biteweed, Cutpurse, Goblin Auto-Barber, One-eyed Cheat, Beneath the Grounds, Burgle, Iron Sensei, Shaku: the Collector, Sabotage, Lotus Assasin, Shadowcarster, Kidnapper, Anub’arak.
Shaman: Finders Keepers, Eternal Sentinel, Tuskarr Totemic, Vitality Totem, Charged Hammer, Elemental Destruction, Healing Wave, Powermace, Ancestor’s Call, Siltfin Spiritwalker, White Eyes, The Runespear.
Warlock: Firbidden Ritual, Lakkari Sacrifice, Chittering Tunneler, Renounce Darkness, Tiny knight of Evil, Dark Bargain, Fist of Jaraxxus, Usher of Souls, Rin the first Disciple, Doom!.
Warrior: Bouncing Blade, Blood Warriors, Livewire Lance, Warmaul Challenger, Crush, Varion Wrynn.
Neutral: Target Dummy, Cogmaster, Hungry Crab, Injured Kvaldir, Garrison Commander, Giblin Stalker, Mechwarper, Micro Machine, Puddlestomper, Recombobulator, Stonesplinter Trogg, Twilight Geomancer, King Mukla, Menagerie Mug, Gnomeregan Infantry, Gnomish Experimenter, Spawn of N’Zoth, Arcane Nullifier, Arfus, Crazed Workshipper, Crowd Favorite, Ancient Harbinger, Chillmaw, Twin Emperor Vek’lor.

There is really a lot of cards, more than 20k dust.

Recently I’ve contacted Blizzard support team and they said that I have to contact the Bug Report Team. Hope This will be solved and I will get my cards back or some dust refund, because these is a lot of money and time spent to get it.
Regards Acek.

Are you sure you logged in to the right account/region?

Are you sure you’re using the right filter to view your collection? Did you look for these cards with the Wild filter, and also with the specific expansion filter?

I don’t know why they would say that. There are no actual details here that could explain how the bug happened, assuming there is an actual bug.

When you submitted your support ticket, did you categorize it as a bug report, or as a missing/lost items report?

Thank you for answer. I am always playing on eu server, because i dont play on the other ones. I chose the wild filter to see all the cards. and spotted that a lot of them are just gone. I chose the missing progress category on support.

Sometimes when people come back after a long break, the default region selection has changed and they don’t realize it, so they log in to the wrong region by mistake.

Did you double check that you are still using the correct account and region?

Checked it once again and it is EU server.