Group by month not working

Can anyone help me fix this issue? As you see group dates are being displayed as default.

What happens if you display Month in your table? Is the data correct, or do you just see Default?
If it says Default, then I’d say there’s a proble with the data. If it displays the dates, then refresh the Metabase metadata for your database.

The data is just fine. I waited a few minutes, and I think I restarted metabase, went into the question again and I was able to group by Date.

Odd.

Forcing a reload in your browser often works too. CTRL-F5 on Windows. Not sure about on other OS.