It can be pretty annoying when you’ve added funds but still can’t make a purchase. It sounds like Steam might be running some security checks, even though you’ve confirmed via Steam Guard. Sometimes, Steam can be slow to fully process everything, especially after a recent wallet deposit, and they may temporarily restrict purchases for security reasons.

Another thing to check is whether there’s an issue with your payment method. Even if the funds were deducted from your bank, Steam may still be having trouble verifying the payment, or there might be a mismatch between your card details and your account.

You could also try restarting the Steam client or using a different browser if you’ve been trying to purchase through one. Sometimes that helps resolve glitches.

If you’ve already tried all that and it still doesn’t work, your best bet is to reach out to Steam Support. They can see if there’s any block or issue on your account or with your payment.

Have you tried looking into your wallet on Steam or tried purchasing through a different method?