As far as I can tell, I'm doing everything correctly.
I even tried - Individual & Group Billing Options checkedboxes only, but still return a 403. i put in dates, no success
Am I doing the dates wrong? Is there something else I need?
I've also installed 2.7.13 and the CSV export on Firefox isn't working. However, it does work on Safari... so if you have access to that browser, perhaps it will help you for the time being?
We're experiencing the same issue, seems to be random (sometimes it works, sometimes we get the access denied message). Where do I find the Admin Tools? Using Joomla 2.5, I'm thinking this fix might be Joomla 1.5.