I just spent an hour piecing together an answer to this problem but I have the fix – here it is for everone else that is Googling the same problem.
Basically, the Blu Ray player needs to check the time with a source on the internet. It will ONLY do this through port 123 on your router. If your router blocks the player’s access to port 123, the player will basically give up. To fix this problem, you have to add an exception in your ROUTER’S settings that opens port 123 to the blu-ray player’s IP address. I googled my router and “open port” to find instructions for my router (a Fritz Box), but your router will obviously be different.
This WILL solve the issue, if you can manage to figure out how to do it. If not, give these instructions to tech support or a tech-savvy friend/nephew/paperboy and they will figure it out.