I have a new 430EXIII-RT flash that i am trying to use off camera with my canon 80D and I cannot get the two devices to link thru wifi at all. I keep getting : this menu cannot be displayed. Incompatible flash or flash's power is turned off." Both the speedlite and the pop up are on, I have scanned, made sure they are on the right channels, etc. I cannot get it to work. Any help or suggestions?? would love to use the flash off camera wirelessly.