Hi @YuLinn, thanks for your message, I’m moving your post from the French-speaking part of the forum to the English-speaking “Game support” section. A member of our support team will follow-up with you as soon as possible. Thank you for your patience! 
You also need steam guard to be turned on now.
I"m also having this issue! how to fix? mobile guard been on
make sure your steam guard is linked to your phone and not to email as apparently email verification does not work for lost ark.
Unfortunately there are a number of players that are having issues with this. If everything is good on your end it is likely an issue between lost ark and steam that needs to be resolved.
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Hello @YuLinn and thank you @kotik for moving this over and @Bluecogs for your accurate input, plus let’s all welcome @gokushenron to the forums,
I am sorry to hear you seem to be having issues with getting your trusted status from Steam to reflect in Lost Ark. Please note that accounts that have not met certain requirements with Steam will have lower purchase limits and will not be able perform certain in-game actions as listed here:
- Initiating player-to-player trades (requests can still be received)
- Sending in-game gifts
- Exchanging Royal Crystals for Gold
- Sending in-game mail with attachments
Some additional restrictions were added with the Patch update on July 20th:
Added new preventions to deter gold sellers. Paid gold (purchased from the currency exchange) will have a 3-day withholding period. Gold that is under a withholding period will be called ‘withheld funds’. Gold without a withholding period will be called ‘available funds’. Withheld funds will be restricted in the following ways:
- Cannot send withheld funds through mail
- Cannot deduct from withheld funds when accepting billing mail
- Cannot use on 1:1 trades
- Cannot use in Auction House
- Cannot use in Marketplace
- Cannot use in Loot Auctions
This is part of a security measure that is in place to combat bots and of which you can further read about here:
In order to make your account trusted you will need to have performed a purchase(s) for at least $5, where sometimes Steam will require a period of 30 days to have passed from the date of the purchase. You will also need to set up the Steam Guard Mobile Authenticator specifically for this status update to take place.
How to set up Steam Guard Mobile Authenticator
Please note it may still take several hours for your account to become ‘Trusted’ after activating two-factor mobile authentication for the first time and up 30 days depending on Steam’s clear time.
I hope this helps and see you in Arkesia! 
I have mobile setup and money balance on steam already but still can’t mail my alts item…
I also have a similar issue where I am unable to exchange royal crystals for gold. My steam account has been verified since 2017, and have spent well over the required amount. I can also access all current steam features.
Character: Baej
Region: NAW
Server: Valtan
yes, how to fix it? I bought a char slot to see if it’s fix but still can’t mail stuff to my alt! i have mobile 2factor on too!. @Fenrirskoll
Hello @gokushenron and welcome to the forums @OTbruv,
I am sorry to hear of your ongoing situations with the trusted status. Directly @OTbruv, please ensure you have specifically enabled the 2FA on the mobile version listed on my previous post.
Unfortunately, if after all the steps from my other post have been completed the trusted status has not updated in-game, all we can suggest is to wait on Steam to have the change applied.
Best of lucks!