Installing WP Simple Pay Pro 2.5 (the legacy version) is very similar to installing WP Simple Pay Pro 3.0 with a few minor exceptions.
If you purchased WP Simple Pay Pro before version 3 was released, you should already have separate license keys for the new and old versions of the plugin. You will also have a separate license key for the legacy Subscriptions add-on if you have the Business license or higher. Make sure you use the correct license keys to enable updates through your WordPress admin.
If you purchased WP Simple Pay Pro after version 3 was released, access to the legacy plugins are only given upon request. If you need version 2.5, just submit a support request.
Before you install, you may want to review the system requirements for WP Simple Pay Pro. You’ll also need to make sure you have SSL (HTTPS) enabled unless it is purely a test site.
WP Simple Pay Pro 2.5 and it’s Subscription add-on are separate zip file downloads and have separate license keys than version 3. If you have the Business license or higher, you’ll need to install the Subscriptions add-on in addition to WP Simple Pay Pro 2.5.
All legacy download links and licenses can be found in your WP Simple Pay account.
To install the Subscriptions add-on, make sure WP Simple Pay Pro 2.5 (the “core” plugin) is already installed. Then repeat the process from the Subscriptions add-on.
Above the download links you’ll find the license key(s) for WP Simple Pay Pro 2.5. Again there will be two if you have access to the Subscriptions add-on.
You should now activate both WP Simple Pay Pro 2.5 (and if applicable the Subscriptions add-on) similar to how you activate WP Simple Pay 3.