So here's what happened,
As the APK downloaded, I Opened it and pressed "install", because I thought it would update the app by doing that...
but it didn't, and it just responded with that error...(*1st attempt*)
After I saw that, I decided to delete the Game entirely off the phone, so that the download can work...
And it happened again... so I decided to screenshot it this time(*this was the 2nd attempt, btw*), to just show the error here, so yea... 😏 just wanted to let ya know...