It looks like you’re using direct payments. This means that itch.io doesn’t hold any money on your behalf, so it’s impossible for money to get lost. “Direct” payments on your account are processed directly on your PayPal account, so if any transactions were completed they will appear on your PayPal dashboard immediately after they are completed. Whether or not your PayPal account is connected to itch.io does not affect previous earnings since they would have gone directly into your PayPal account at the time of purchase.
I don’t see any completed transactions associated with your account though, so I’m not sure where you would have seen any earnings. If you could provide more information about where you saw “10~14 bucks” we can try to give you more information.
Thanks