Spectator messaging

Hi all.  I have a few races coming up including a marathon next week in Valencia.  I’ve never used the spectator messaging before but have been testing it with my wife this week.   A part from the complete faff to set it up,  when I get a messaging it appears then stays (fine) but to remove it shows a small down icon which if you do brings up a green tick on the middle left button.  I press it but nothing happens.  The messages also keep appearing (with vibration) and don’t stop at all.   The other option is to disable which therefore makes it pointless.   I have tested this to make sure the message is only being sent once (via the text link ok and IOS mobile  device).   Any thoughts or experiences from this group ?

(is it also true you don’t need the subscription for basic live track? As if so why pay the free for spectator messing?  I know that also includes safety features