To visualize your data using Kibana, you have to click on the Kibana button next to the application's name, from the Logsene tab of your account. Alternatively, you can go directly to https://apps.sematext.com/logsene-kibana/index.html#/dashboard/script/logstash.js?index=TOKEN, where TOKEN is the application's token.
Once you're there, you can customize your dashboard to do all kinds of searches and visualizations to your data.
If you want even more flexibility, you can install Kibana locally and point it to Logsene.