Cannot "check" and "reset" the answer

Subject: Issue with Answer Submission on OpenLearning Activity (Cannot Check Question 9)
Message:
Hi OpenLearning Support,
I am currently facing an issue with one of the activities in my course. Specifically, I am unable to check or submit my answer for Question 9 under the section “Definitions and Examples of Disconfirmations.” The system does not display any feedback (such as "Correct" or "Incorrect") even after selecting an answer and clicking "Check." The answer options are still active, but nothing happens when I click the check button.
This issue is affecting my progress, as the activity appears incomplete on my dashboard. I have tried refreshing the page and switching browsers, but the problem remains.
Could you please assist me in resolving this so that I can proceed with the course?
Thank you for your support.
Best regards,
[Mohammad Aidill]
[UCS3122 Professional English ( sem 2, 24/25)]