Can't add credit card to resolve paypal my limited PayPal account..

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My problem is I haven't linked my credit card to my account, then my account is limited. Because of the limitation, I can not add/remove my credit card. However, in order to begin a limitation review I have to confirm my credit card. When I am trying to link my credit cuard to my account, I always get an error. What should I have to do now to resolve my problem?