Why I can't play with friend with higher Rank?

[EZXG]

I'm in Bronze II, and 1st friend is Bronze III and my 2nd friend is Gold IV 

in Ranked league queue, my 2nd friend (Gold IV rank) always get disconnect from the match.  why ?

can't play with higher rank ?

[Koochi-Q]

@EZXG I saw that you can, but that you lower ranking ones would also fight against goldies... maybe it’s an unintentional bug or something? Have you tried letting the goldie be host or does he have to update his game or something?

[Anlbrd]

@EZXG You can mate :S Sounds like your friend has some kind of corruption with the game.