Did you maybe minimize it? Is there a bar with no info below is that says "Subeta: Seephira." https://subeta.net/preferences.php?act=sidebar This is where you add and delete widgets if you need to add it back,

Can you screenshot it for me

In the meantime, you may try removing the widget and then adding it back to see if that works.

Again, Facebook is not the place to discuss bug reports.

What happens if you click "Toggle Sidebar" on the top? Try clicking it and let me know if anything happens at all.