Ref: UK213797 Here are some common issues you might encounter when linking a bank account:
The bank account must be a U.S. bank.The name on the bank account must match the name on the PayPal account.The bank account can’t be linked to more than one account at a time. Try removing the bank account from the PayPal accountit’s currently linked to. There is help if you forgot your login details. The bank account has been linked to 3 PayPal accounts (in total) in the past. A bank account cannot be linked to any more than 3 PayPal accounts over its lifetime.The bank account is already active on a PayPal account that has a limitation or a balance below zero. You can add a bank account to one PayPal account at a time. However, if approved, you may be able to add it to a second PayPal account. You will be informed when linking the bank to the second PayPal account if you have been approved.
More details: Why Won Paypal Link My Bank Account
