I have installed a payment plugin (for Pireaus Bank) but when I proceed with the payment I get an error: "Forbidden. You don't have permission to access /plugins/.../pay.php on this server".
The developer of this payment plugin informed me that this error is due to an extra implemented security (admin tools). How do I fix it and give permissions to these files?
Best regards.
Makis
P.S. I tried to disabled admin tools so to check if this is the reason but I can't: "403 Access Denied".
How do I disable admin tools pro?