How to install Logos app on new device

I recently acquired a new Kindle Fire.  I want to install the Logos app on that device.  I am signed into both my Faithlife and Google accounts.  When I go to Google Play to download the app, the page tells me that the app is installed.  I do have the app on another device, so how can I let Logos know that I have a new device? 

I hope this makes sense.  Thanks for your help.