here is trick (from mobile and mig beta ll )
its useful trick that u can invite any user or all users from room to group chat if there is slanger flooder or kicker or something else
1st: make a group chat (u and ur friend or ur 2 or 3 ids)
2nd: go to the chat room and make call (any free call or call ur free service) then go to mig again and in writeng window choose
[Ensert username] click back
3rd: go to the group chat and invite some1 who is already in the group (or invite urself)
4th: cancel the calling
what was happened!
When u invited that id who already in the group then the error [failed to invite user to group chat - ****** is already in the group chat] when u type ok u will see the list of [ensert username] is n0t for choose the target,it will be list to invite them
then u can invite any 1 from the rum
u can also click to invite some1 and click back before the invite is done then u can invite another one and u can repeat doing it
enjoy it