Group superadmin questions

Need some help from experienced group admins please:

I have a new group currently with 41 members.

1) How do I send a message to the whole group?

2) I just sent our first team match challenge & it was accepted.  However, if I go to our team match link, it shows an open match but I have no tab/link to "join match"?  anyone know why?

Thanks in advance for your help.

Dan

1) You can send a message to the whole group by posting a news item

2) Have you already joined the match, or are you a member of both teams participating?

I am a member of both teams - that's it.  Thanks.

and, I had seen the news link but didn't know that it was sent out as a message - thanks again!

How do I change my alert settings so I get alerts from my group?

1)  Time sensitive.  My group was challenged to a match which I accepted.  The match has started without me locking my team.  The match ups are very one sided favoring the other team.  How did the match begin without my locking my team?  I would like to cancel the match as it is too one sided.  How can I do that now?

2)  I am the super admin of this group as of a few hours.  Access to the group is supposed to be by invitation only.  Our former super admin. last logged on in May.  How did the newest members get in, as I never admited them in my capacity as admin?

1) "The match has started without me locking my team." Autostart.

2) "How did the newest members get in, as I never admited them in my capacity as admin?" Possibly they were invited in May and just got around to accepting.

also an ordinary admin can invite and/or accept invitations.