Why does the WWE App show is not for Lumia 521 with 8.1 software update?

[Windows Central Question]

I have tried to get the WWE App for Nokia Lumia 521 update 8.1 to no avail thus far. I keep getting the message that it may not be for my device, but the app only needs update Windows 8.1. Even on Windows Store it is not detected as Windows 8.1 Update, but in the settings it is shown as updated to Windows 8.1.

 

[Jas00555]

It may be that it requires 1GB of RAM, and the 521 only has 512 MB.

Which WWE app are you referring to btw?