I have published another free plugin to the plugin store. This plugin contains modern customizable popups/alerts build with the Sweetalert2.js library.
(The plugin page says that this is a paid plugin, but this is wrong and you can add it to you app for free inside the bubble editor. After installing, don’t click ‘buy’ or ‘resubscribe’ or you will pay for the plugin ofcourse. A bug report is submitted)