If you are encountering difficulty installing the same app on multiple devices through the Google Play Store, there are a few simple steps you can follow to resolve the issue. First, ensure that you are signed in to the same Google account on all of the devices you wish to install the app on. Next, go to your device settings and select the "Accounts" option. From there, select "Google" and then choose the "Sync" option.
This will ensure that all of your devices are synced and connected to the same Google account. Finally, go back to the Play Store and attempt to install the app again. If these steps do not resolve the issue, you may need to clear the cache and data for the Play Store app and try again. With these simple steps, you should be able to successfully install the desired app on multiple devices without any further problems.