Hi! I have a problem with Odnoklassinki social login and receiving email. I'm using SMF 1.x with your plugin. https://forum.grodno.net/
I read in your instructions what i need to obtain GET_EMAIL permission from support > To obtain the user's email address you must send an email to firstname.lastname@example.org and request the GET_EMAIL permission for your Odnoklassniki app. I've contacted with support and got GET_EMAIL permissions from them (at least they have confirmed that).