I did not realise that only 5 minutes are given. Please send to vk3kro@yahoo.com

You'll have to talk to Yahoo. Thunderbird is your email client, but not your email provider.

Did this reply solve your problem? NO !

I have another account at Yahoo. Seems to be working fine. Some low-life worked out my previous password, and I cannot get in to T'bird right now.

T'bird IS my email provider.

My email address is autoscan@autoscan.com.au

T'bird IS my email provider.

No, it's not. You can request a temporary password here as many times as you want, it won't help you a bit. Also see https://support.mozilla.org/en-US/kb/thunderbird-faq#w_what-is-my-thunderbird-email-address

If your account is Yahoo, you may be better off here. https://help.yahoo.com/kb/account

A previous temporary password (sent by Mozilla) was 005196.

But it expired before I was able to use it.

The message I get is :

Login to server mail534.pair.com with username autoscan@autoscan.com.au failed.

So I may need to go to pair.com ?

A previous temporary password (sent by Mozilla)

Well, then I have no idea what you're doing. It certainly has got nothing to do with recovering your Yahoo account password.

So I may need to go to pair.com ?

So the Yahoo email address was a red herring. If pair.com is your hosting/email provider, then yes, you'll have to talk to them.