This article will teach you how to install WHMCS manually using a hosting control panel that has an in-built file manager.
Step 1. Download the latest version of WHMCS from the WHMCS website.
Step 2. Log in to your hosting control panel and navigate to the File Manager.
Step 3. Navigate to the directory you want to install WHMCS in.
Once extracted the WHMCS software files will be in a new directory called "whmcs".
Step 5. Navigate to the "whmcs" directory and move all of the files to your original directory.
Step 6. Go back to your hosting control panel and navigate to the database section.
Step 7. Click on the create database button and enter your databases name, username and generate a password.
Step 8. Navigate to the WHMCS installation page at https://yourdomain.com/path_to_whmcs/
Step 9. Go through the installation process entering your information and database credentials you created earlier.