help understanding Xfinity router event logs

there are several entries in my router event log that I would like to understand.   several entries such as "[Wifi 8419]: KeyPassphrase Changed" and I didn't change any password or anything at the times listed for these events.    We did change the original router password on 3/11 [18:24:07] but never again.    AND there is one entry for KeyPassphrase Changed at 3/12/2024 at 2:21:36 (2am?) while we are sleeping - not sure how that can happen?   included below table from event logs for someone  to help us analyze and explain what is really means - thank you!