A31_SS_IPC keep disconnecting every 1.5 days

Hi support, I own a A31_SS_IPC and it runs properly so far, but recently it started to keep disconnecting every 1.5days regularly and the only way to solve it is to unplug and plug it again to reboot it. Loops and loops. I have confirmed it is connecting with a strong signal (100%) 2.4ghz wifi and my wifi network is good enough as other cameras are also connect with same network which is no issue. Tired to delete the remove the camera and add it again in app but didn't help. Attached pls find pic for more details. It is important to me as I need it to check for my baby time to time Please help to solve it! Many thanks