Hi Farley,
The Quiz and Exam Reset Request form is in the Campus Support menu, not the Forums. Look near the top of the site and click “Campus Support”. You’ll see a link to it in the menu that pulls up. (If you are on a mobile device, it’s in the main menu)
You don’t need a reset to the quiz you made 80 on, since you have a second attempt. 80% is good enough for Certification, but I just wanted to encourage you to gain a better understanding on the questions you missed.