Permission Denied!

I have OC 2.3 and I uploaded secondary flat rate (this site http://www.opencart.com/index.php?route ... _license=0
and show me:

You do not have permission to access this page, please refer to your system administrator.

Please tell how can I fix it.

Extension Multiple Flat Rate | Secondary Flat Rate | Flat Rate2, doesnot support OC version 2.3.0.2.

OK, I have better version. It's works!

http://www.opencart.com/index.php?route ... load_id=47

Hi,

I had new installed of opencart 2.3.0.2 and it looks great. But, there is a problem when i try to edit the configuration for payumoney module. When i safe the module setting, it always show "Permission Denied!". I try all things that i can do, I grant all Access Permission, Modify Permission for administrator. It still not fix my problem. It shows the error message "You do not have permission to access this page, please refer to your system administrator."

Please, help me fix this problem. I am stuck.

Permissions errors in 2.3 mean that the extension hasn't been updated for the new extension directory structure. You'll need to contact the author of the extension to get an updated version, or use my OpenCart 2.3 Extension Compatibility Fix to fix the compatibility issues that 2.3 introduced.

Maybe the files don't have permission.

Go to Users / User Groups
Edit Administrator
Click on Unselect All for both .
Then Click Select All and Save.

Maybe this will work for you.
Sometimes new files from a extension don't have permissions.
By doing this you will give them persmissions.