YouTube/streaming video won't play over wifi!!

[guitarg3ar]

Please help, it's a bizarre issue. I've tried some of the things that are supposed to work such as clearing various apps data/cache, updating firmware on my router, and installing tons of other youtube apps to no avail. It works over 4g but not wifi, thanks in advance for your help! I have the verizon LG G2 if that makes a difference.