I have just completed a strengthening exercise on Abstract Objects starting at a strength of 4/5, got all the answers correct (not a common event) and yet I am still shown as 4/5. This has happened before on this course, but not on any of the others I do. The "contact" button wouldn't work when I tried to report this as well. Is this a glitch on the English from Italian course only, and could someone at Duo please correct it as it's demoralising. Thanks.