invalid merchant configuration and something is wrong

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  • Plugin Author wp.insider

    (@wpinsider-1)

    That basically means that the sandbox API details you used is incorrect. PayPal uses completely different API and account details for sandbox and live transactions. So it can get a little confusing unless you are a developer.

    Just use it in live form and use your LIVE account details and API credentials. If you need to test, do a test transaction with a small amount like $1 or something like that.

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