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This redirect may need to be adjusted depending on your path to paypal.php in your WHMCS and your Blesta installation directory. Also, the 1 in /callback/gw/1/paypal_payments_standard/ references the company ID in Blesta. If you do not have any addon companies, then the company ID is 1. Note that normally the IPN URL for each client is unique, andd and look something like /callback/gw/1/paypal_payments_standard/?client_id=12345 where 12345 is the internal ID for the client. If this is ID is missing, Blesta attempts to match the transaction to a client based on the client's email address. If there is no match on the client's email address, the transaction will not be recorded.
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