Download the plugin from the link in first email. Do not extract the file it should be in .zip format.
Before proceeding please delete the free version.
1. Go to your WordPress Dashboard.
2. Click on plugins.
3. Click on Add New button on top of the page.
4. Click on Upload Plugin button.
5. Click on Choose file button.
6. Select the zip file.
7. Click Install Now.
8. After the uploading is completed click Activate.
Note : In case the plugin file is not in zip format follow the below steps.
For Mac users : Right click on the folder then click on Compress.
For Windows users : Right click one the folder bring mouse over Send to then click on Compressed (zipped) folder