i just seen that tokyo ravens got new ep but for some reason it wont me let watch episode 13 English dub
I think that only Episodes 1-12 have been released, so far. I just looked it up, and Part 2 will be released on DVD/BD on June 16. You can pre-order it at the link below, or wait for a couple of weeks until the stream is available.
Episodes 13-24 dub are currently streaming on Funimation since yesterday (midnight central time, 1am eastern time). :) I've watched the first 18 episodes in dub and they played just fine for me. If this is still a problem for you, you might want to submit a support ticket.