Updating plugins is a good practice to keep the functionality of your website up to date. For Saasland, the plugins that are included with the theme need to be updated as well. However, you do not have to pay for the updates of the pro plugins. Just following the plugin updating process will be enough. If you want to know how to update a plugin, please follow the steps below: 

• From the WordPress dashboard, go to Plugins > Installed Plugins.
• On that page, look for the Update Available option and click on it to see the plugins that can be updated. 

• If you update all the plugins that have available updates, check the Plugin box at the top of the plugin list.

• Or you can manually select the plugins you want to update. Once you are done with selecting the plugins, click on the Bulk Action button and select Update. It will gradually update all the plugins.  

Once you are done with this, your plugins will be updated.