I had the same rebooting problem which started around 3 weeks ago.
I did a factory reset and it seems fine now. After the factory reset, the weather app is missing, so I suspect you’re correct, it was the weather app causing the initial issue.
I suspect this is a global issue with these boxes - there’s another topic about it here - https://community.wd.com/t/wdtv-live-wont-boot-keeps-restarting/275914
