If you're not prompted for the password Thunderbird cannot reach the server. Verify your Internet connection, and make sure TB isn't blocked by your personal firewall.

I am connected to the server, and it appears Mozilla is connected to the server. I am receiving emails and can read the emails that have been received today. But any emails I received prior to today I cannot see (this includes emails that I have opened and read, and emails that I haven't opened). Can you direct me how to review my password information and prompts? I don't know why it is not prompting me for my email account, but my childrens emails the password prompt comes up.

right click the folder, select properties and then the repair button.

I see no repair button anywhere. I have right clicked on individual emails, folders, looked in "File" tabs and I see no repair option. Is it possible to speak with someone on the phone?

What part of Right click on the folder did you not get?

I right clicked on the Inbox, it seemed to repair some of the emails. But there is a month of emails from 3/9/14 to 4/9/14 that have disappeared. I can't locate them in any folders. Any ideas? Without sarcasm would be helpful.