If your survey isn't submitting causing your assignment to stay in-progress and you are using Safari, there is a setting you will need to change or you can also try using a different supported browser to see if your survey will submit.
Step 1. Go to the Safari tab on the top left corner of your computer and select Preferences.
Step 2. On the new window, you will click the Privacy tab and find Website tracking: Prevent cross-site tracking.
Step 3. Check off the prevent cross-site tracking option.
Once these changes have been made, go back into your assignment and click submit on your survey and your assignment should now be marked as completed.
If after making these changes and you are still not able to submit your assignment please contact Support so we can provide further assistance.