Sometimes Tabnine does not appear on the status bar because it is disabled by the settings of your IDE.
On VSCode and JetBrains IDEs, please see if Tabnine is not unchecked by mistake.
You can always enter Tabnine Hub. Just type anywhere in your file:
Make sure your plugin is up to date. You can do it here.
There is an open bug in JetBrains IDE. Please, do the following to try and show the status bar:
- Shift+Shift (will open a window, see the first picture).
- Make sure you click on Tabnine (like in the second picture).