If you are using personal version and want to upgrade to profession version then please follow:
1. You need buy pro version first
We accept payment via , once your payment received we will send you a license and you can download pro version.
You are required to have an account in our system first, you may view all your purchased product and download there.
2. Install professional version from your WordPress Plugins Dashboard.
3. Activate plugin license from the DashBoard menu BSK PDF Pro.
If your personal version is above 1.5 then please take step 4 otherwise take step 5
4. Uninstall personal version
Only personal version above 1.5
Deactivate the personal version in plugins Dashboard.
Delete the personal version
5. Remove old personal version from you server by FTP
For personal version under or same 1.5
The folder on your server /wp-content/plugins/bsk-pdf-manager/