Please follow the below steps to upload the plugin.
1) Download the zip file from addonsplus.com website
2) Extract the zip file.
3) You will find 3 files 1. addonsplus-wsc 2. Licensing 3. addonsplus-wsc.zip
4) Remove the free version of the plugin from your website.
5) Upload addonsplus-wsc.zip using WordPress plugin page.
6) Activate the plugin.
