KLCK wakes up screen every few seconds

If I have KLCK enabled, my S9's screen will wake up every few seconds until I disable and force close the app. This basically means I can't use KLCK without heavily draining my phone's battery and having it run hot.

I use the standard fingerprint lockscreen for safety, and the KLCK lockscreen is just a long press. They seemingly work great together aside from this issue. Any way to solve this?