user limit problem and upgrade msg doesn't send

user limit problem and upgrade msg doesn't send

Using the no cost option and very infrequent user.

Did the number of users change? I just discovered the limit is 3 users. But I had 14 listed, though only 6 confirmed. I deleted 9 and went to add 9.   I get 'exceeded user limit" and a new tab opens with a upgrade window to send a msg. I type my message and press send and nothing. So, since I am not getting a notification I presume the msg is not sent. And I tried this several times, checked cookies settings etc etc.