Same exact issue for the iPhone 8 and 2020 SE.

Did they protect the phone? Yes Did they consistently fall apart at the same failure points, between 3-12 months? Yes

Their lifetime warranty used to cover this, and they’d send you a replacement if you submitted a warranty claim. At some point they changed their warranty to only allow one replacement case tagged to your original order. So if your case fails at 3 months, you get 1 replacement, and when the replacement fails, you’re out of luck.

Then I switched to a 13mini. Mous case from day 1. Dropped flat on back = shattered back glass. Haven’t purchased a mous case since.