First of all, invitations are meant for only one person to connect at a time. If an invitation email has been shared (through an email transfer, for example), it may result in participant’s expel . Consequently, each time an invitation email is used in a multiple way, one of the two users of this invitation is expelled. It is essential that each guest have his/her own invitation linked to his/her own email address. Invitation emails must never be shared. Try contacting the activity organizer and asking him/her to send you another invitation to a different email address (e.g. a personal address).