Hi elforo,

Please navigate to Dashboard > Forums > Settings > Features admin page, enable the "Show Admin Bar for Members" option.

It worked!! Thank you very much

A related question: Now the Wordpress logo appears at the top left. Is it possible to eliminate this?

Hi elforo,

Please navigate to Dashboard > Forums > Settings > Styles admin page, add the followin code in "Custom CSS Code" textarea. 

However, please note this will hide the logo for admins as well. 

#wpadminbar ul#wp-admin-bar-root-default>li {
   display: none !important;
}