WHMpress Helper takes WHMCS-WP integration to next level. It is a WHMCS addon, It is needed by Client Area Plugin to communicate with WHMCS.
Note: Perform this on your WHMCS installation.
1. Extract WHMpress_Client_Area_API-v1.3-full-package.zip from code-canyon. It contains helper file whmpress_helper_v3.zip (WHMCS Module)
2. Extract WHMpress-helper and upload its content (whmpress folder) to /modules/addons/ located in your WHMCS install folder.
3. Then Login to your WHMCS admin panel and activate the WHMpress Helper via the Setup->Addon Modules Menu Item.
If you notice blank admin screen after uploading the files through FTP, Chances are module files are corrupted during upload. This can occur if files are uploaded using an FTP program in ASCII mode instead of binary.