How to Fix Invalid Card Number Cash App?

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Make Sure that your are not using a VPN

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Double check your Bank Card Details

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Check for the expiry date of your Credit/Debit Card

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Make Sure that you are using A VISA, Master Card, Discover or American Express Card.

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You have to activate your Debit/Credit card first if it's new.

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Cash App only supports the banks that operate in the U.S.

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You can not link a bank card if you are using Cash App outisde of the U.S.

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Call your bank to Check if they have put your account on a temporary hold.

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Check the server status of Cash App.

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Contact Cash App Support and Your Bank if the problem persists.

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For More detailed explaination Visit cashwalletapps.com

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