I can not down load Emails from Yahoo to Thunderbird tired all listed solutions - any ideas?

I have since deleted Thunderbird and then reinstalled  latest version of Thunderbird (154.0) .
I re-entered my password. I checked the OAuth2  settings and they are set as described in the support article "OAuth2 Authentication for Yahoo, AOL and ATT". 

I can not down load Emails from Yahoo to Thunderbird. Every things was fine as of Aug 26th. On Aug 27th with no changes to any system settings the Yahoo Emails would not down Load. I am running Win 10 on my system. I disabled the antivirus. Reloaded Thunderbird - no effect. I have since deleted Thunderbird and then reinstalled latest version of Thunderbird (154.0) . I re-entered my password. I checked the OAuth2 settings and they are set as described in the support article "OAuth2 Authentication for Yahoo, AOL and ATT". Message bar at bottom of Thunderbird screen shows: Myaccountname@yahoo.com:Downloading message 1 of 7 The emails do not down load - then after a few minutes - a no messages to download message flashes and then blank - nothing I am out of Ideas. Anyone?