I got my monitor today and it doesn't work. LG technical support confirmed the following: 1. Monitor does not work near a router. 2. MacBook must be to the le

I got my monitor today and it doesn't work. LG technical support confirmed the following: 1. Monitor does not work near a router. 2. MacBook must be to the left or in front of the monitor. 3. Thunderbolt cable shipped with monitor might be defective. LG is shipping me a new cable to try, but I only have 14 calendar days to initiate a return.