If you encounter a 403 error on your website - don’t worry, as it can easily be fixed!
It basically indicates that you are trying to enter an address or a website that you are prohibited from accessing. These can happen for two main reasons:
You may have an incorrect file or folder permissions. If that’s the case, you can easily fix the permissions of your files;
There are some incorrect settings in the .htaccess file. Rename the .htaccess file in the File Manager - if you can access your site again, check the code in .htaccess file, as something in it is blocking your connection;
You may have pointed to the wrong IP address, make sure to check if the A and CNAME records are set to the same from your hosting plan.
For additional information on how to process this, check this amazing and quick step by step tutorial with 3 different methods to solve this error: What is the 403 Forbidden Error & How to Fix It (3 Methods Explained).