The log line isn’t from a Player. That’s the clock in the CMS UI updating itself, and then someone clicking on the Displays page.
SSL labs will give you a grade based on accessing that URL with a modern browser. Android 5 dates from 2014, so you’ll need to check the connection simulations SSL labs does to see what it says for Android 5 devices. You may well need to make changes to the cypher preferences you have setup.
Fundamentally though, the webserver handles everything to do with SSL. The CMS plays no part in it. If it works over http, and not over https, the issue is with your webserver and not with Xibo.