After today`s maintenance, problem with absent cards remains.
Yes Iām having the same issue thou! The stats still apply but cant unequip the cards at all, they are all blank.
Same problem here.
Yesterday it was normal, but today I lost my lvl 10 card.
Same here, lost 5 cards
I lost 3 cards as well. :ā(
Same thing happened to me; equipped seven cards yesterday, today when I checked they were gone. ;_;
Date and Time(Please, specify the timezone) :
Arround 5:00 EDT
Aug 16, 2016
Server Name:
Fedimian
Team Name:
Casabi
Character Name:
Diomedes
Bug Description:
Yesterday arround 5:00 PM EDT, I equipped seven random Bosscards from my inventory, all lvl 1. I tried to equip and unequip a necroventer first to test if theres a penalty for unequiping lvl 1 cards and it was fine, so I equiped some other spare cards from my inventory.
When I logged in today I noticed all the cards disappeared from both my inventory and the equipment window.
"Greetings Savior,
Thank you for contacting us.
We apologize for the the inconvenience. We are fully aware of the issue and our developers are doing their best to fix the issue.
Also, we would like to inform you that the additional Stats of the cards still take effect even though it does not appear on your Monster Card Slot.
If you have any other concern, please do contact us.
Regards,
Tree of Savior Support"
Same problem here im lost 6 cards
and now ??
restore my money ?
Tsk just tried out what are the actual effects of various cards, almost all of them lvl 2, so Iām just stuck using those? lol
Yes, the bug is only for UI, the card still works⦠just cant remove idk if is a addon problem, cause one friend removed one.
Same problem.
server: Fedimian
Team Name: EGERb
Iām just sharing info that I know, I didnāt equip any card so I donāt have this problem. There is a new addon that allow you to remove the card.
Same here whats wrong with this thing
sever: Verena
team name: LarsArdersen
charater name: Revenge
3 cards dulahan and two other card
Hello! Same here I noticed Iām missing my monster cards that Iāve placed into the monster card slot this morning. 
Mind, theyāre not like super rare cards but some where nice.
Server: Orsha
team name: Nijiyume
character name: Ichi-san
What has been the status of dealing with this particular issue so far?
Also lost the Monster Card I equipped moments ago.
Equipped it after a few minutes, I went into an instance dungeon. Right after the loading screen, it was gone. I was gonna remove it as I was testing how much MDEF it adds (it was a 5-star Nuaele Card).
Please do something about this IMC. 
Also, I suggest you add a bit more info on the tooltip when viewing cards; like how much is the actual stat a certain X-Star card gives so we wonāt have to test. Some description on the cards are kind of ambiguous and lack detailed information.
Here are my info by the way:
Server: Varena
Team Name: EliteGroup
Character Name: Jihl
Edit: even though the card disappeared on the Card Slot, the effect is still active (5-Star Nuaele gave +18 to MDEF). I wanna remove the card and make it 10-Star to see how much is the max MDEF it will give. (as you can see, I am in grave need of MDEF)
Hello! Same here⦠I just lost a card that I equipped last night! 
Sever: Telsiai
Team name: Nightenford
Charater name: SchelleTear
Itās a 10* Glass Mole Card. 
Please review ASAP!!
The card is still there and the effects work too, just canāt remove the card or see it there.
[update]
so i tried out equipping another card to check what others said. it definitely looks like an issue with the UI.
equipped a lv10 Ellaganos Card. dex bumped up to 10; when i re-entered TOS, card was missing but stats still had that +10 dex.
also proven that the Dullahan Card works. it saved me a soul crystal against Mirtis and turned the table on some PVPs.
still no option to remove cards, but you can definitely still add new ones.
Server: Klaipeda
Team Name: Iamandu
Character Name: Tupan
Put the cards on slots yesterday. Logged out.
Logged in today and canāt see but theyāre still there or theyāre completely gone.
Update:
It seems theyāre still around, just canāt see themā¦
