I wagered 5 lingots to get 10 if I kept my streak for 7 days. Now, though, it says "day [object object] of 7". What is wrong?
Just another bug in the Duolingo garden. It's had a bit of an infestation pop up since the update.
If you hover the mouse over your username where it appears in the blue bar at the top of the screen (desktop version), a menu will appear. From the options, select "Help". Scroll all of the way down the Help Center page and you'll find a green button next to a blue button. Click the one that says "File a bug report."