How to update the plugins
All Plugins are setup to automatically check for new versions.
Checking for updates
Go to Dashboard / Updates, WordPress will list any plugins that are out of date.

Follow the steps provided to update your plugins.

If you aren't seeing updates and you know that new versions exist. Make sure your Bellevue Theme is up to date, first. It needs to be using version 4.2.7 or higher.
https://help.bellevuetheme.com/article/150-how-to-update-the-theme