Skype Add-In gets disabled when switching multiple accounts(guest) between MS Teams

I think it's pretty simple, because, when you switch to a guest account, as mentioned in article guest user does not have permission to schedule a meeting. Since the guest account does not have permission to schedule a meeting, Outlook might be disabling the add-in. Another reason could be, in SFB you needed same account in Skype and Outlook to schedule a meeting. Same would be carried over in Teams. Since the user account in Teams and Outlook are different, add-in is disabled.