May 11th 2022 UPDATE:
Yes, users who completed Identity Verification Level 1 can now deposit QUAD into their Quadency account. USDC deposits are coming soon. Other coins and digital assets deposits will be enabled as we launch the Quadency Exchange during Q2 - 2022.
Yes, you can withdraw the assets deposited into your Quadency account. You can find more information on how to withdraw QUAD here.