Sony smart TV, HBO max app, Harmony remote

I gave a Sony smart tv and a Harmony remote.  I never use the Sony remote.  On the Sony remote there is a Google Play button, so I believe I can download the HBO Max app to the Sony TV and login so I can get the app in the Xfinity apps section.  My question is whether this action will affect the Harmony remote settings?  I can't find any information about this on the internet.  I did not set up the Harmony so I am unable to troubleshoot if there is a problem.

Does anyone have any experience with this issue?