UNABLE TO CAST – Plex: Watch Live TV and Movies Review

Ok so hopefully someone here can help me! I paid like $5.99 for this app AND IT DOES NOT CAST! I downloaded it to my iPhone 6S Plus, created my account, then successfully paired the app to my smart tv! I have a Vizio tv which is already working with Google SmartCast and Google Cast! However, when I try to cast anything (pic or video) from my camera role to my tv, I get an error message "sorry something went wrong unable to cast"!!! WTH!?
Review by KemValley on Plex: Watch Live TV and Movies.