Better guid/flow for accepting the invitations
When a user receive an invitation, by clicking on invitation tab he/she should see the list of invitations and being able to accept, refuse or block the account. If there is no action, the invitation will be remained there.
Currently, user has to go to the invitation tab, then he\she is supposed to click on each conversation to see the invitation, which is not intuitive and informative flow to receive and accept the invitation.!