Why can't I withdraw from blockchain?

To protect your account and ensure the integrity of our trading system, we may retain funds that leave the platform, especially if you buy cryptocurrency with a card or if we detected abnormal activity or security issues on your account, 5 days ago. To solve your problem, send your crypto balance to Kraken (or any other trading wallet). When depositing your funds, be sure to check the minimum deposit. When you transfer funds below the minimum, you won't see your funds in the balance.