Go Lite to Pro
Step 1: Deactivate RafflePress Lite
Note: It’s okay to skip this step if you do not have the Lite version installed.
The first step is to remove the lite plugin (you won’t need it anymore). To do that, just go to Plugins » Installed Plugins from your WordPress dashboard. Then, click on the Deactivate link under RafflePress Lite.
When the page reloads, you’ll see the plugin has been deactivated.
You can Delete the lite version as well if you want.
Step 2. Install and Activate RafflePress Pro
First, you need to download the plugin from the source (which will be a zip file called rafflepress-pro-x.x.x.zip). You can access the RafflePress download at https://app.rafflepress.com/downloads
Next, you need to go to WordPress admin area and visit Plugins » Add New page.
After that, click on the Upload Plugin button on top of the page.
This will bring you to the plugin upload page. Here you need to click on the choose file button and select the plugin file you downloaded earlier to your computer.
After you have selected the file, you need to click on the install now button.
WordPress will now upload the plugin file from your computer and install it for you. You will see a success message like this after the installation is finished.
Once installed, you need to click on the Activate Plugin link to start using the plugin.