Welcome to the Forum, @hark001! 
While the hardware itself may be 64-bit capable, as @ssummerlin indicated if it’s running a 32-bit version of Android then you won’t be able to install current production versions of the Wyze app from Google Play Store. This topic provides some good discussion of the issue for reference:
Unfortunately, I’m not aware of an easy OS-native way to tell if a particular Android instance is 32- or 64-bit, but third-party apps available in Google Play Store can help you figure this out.
If you find that your device’s Android version is 32-bit only, then your best bet is likely to be grabbing an older v2.50x app from a third-party source like APKMirror or APKPure.