Error: Square was unable to compete the transaction. Please try later

Hi, there. I am using facing a problem with the square payment plugin. All of my plugins and used them are updated.
I am getting this error while checkout. “Error: Square was unable to compete the transaction. Please try later or use another means of payment.”
Here is the WooCommerce log status

01-13-2019 @ 08:30:39 – Info: Begin processing payment for order 354 for the amount of 4.00
01-13-2019 @ 08:30:39 – Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => INVALID_ENUM_VALUE
[detail] => is not a valid enum value for billing_address.country.
[field] => billing_address.country
)

)

01-13-2019 @ 08:40:14 - Info: Begin processing payment for order 355 for the amount of 5.00
01-13-2019 @ 08:40:14 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => INVALID_ENUM_VALUE
[detail] => is not a valid enum value for billing_address.country.
[field] => billing_address.country
)

)

01-13-2019 @ 09:42:17 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:42:17 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => INVALID_ENUM_VALUE
[detail] => is not a valid enum value for billing_address.country.
[field] => billing_address.country
)

)

01-13-2019 @ 09:44:34 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:44:35 - Error: Array
(
[0] => stdClass Object
(
[category] => PAYMENT_METHOD_ERROR
[code] => INVALID_CARD
[detail] => Invalid card number.
)

)

01-13-2019 @ 09:46:08 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:46:08 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:50:05 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:50:05 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:51:31 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:51:31 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:52:46 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:52:46 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:54:43 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:54:43 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:57:05 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:57:05 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 09:58:08 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 09:58:08 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 10:00:07 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 10:00:07 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 10:01:19 - Info: Begin processing payment for order 363 for the amount of 25.00
01-13-2019 @ 10:01:19 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

01-13-2019 @ 14:48:24 - Info: Begin processing payment for order 364 for the amount of 35.00
01-13-2019 @ 14:48:25 - Error: Array
(
[0] => stdClass Object
(
[category] => PAYMENT_METHOD_ERROR
[code] => INVALID_CARD
[detail] => Invalid card number.
)

)

01-13-2019 @ 14:50:26 - Info: Begin processing payment for order 364 for the amount of 35.00
01-13-2019 @ 14:50:26 - Error: Array
(
[0] => stdClass Object
(
[category] => INVALID_REQUEST_ERROR
[code] => IDEMPOTENCY_KEY_REUSED
[detail] => The idempotency key can only be retried with the same request data.
[field] => idempotency_key
)

)

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