Solution to: Gnome Pomodoro is not showing the text of remmain time in the gnome-shell top bar

In the newer versions of gnome-pomodoro, you can see an icon with progress bar like that:

 

But probably you are missing the countdown timer like:

For this, just type in a terminal:

$ gsettings set org.gnome.pomodoro.plugins.gnome indicator-type text
$ gsettings set org.gnome.pomodoro.plugins.gnome indicator-type short-text
$ gsettings set org.gnome.pomodoro.plugins.gnome indicator-type icon

References:
- https://github.com/gnome-pomodoro/gnome-pomodoro/issues/262