Hi Debra,
Welcome to the Answers community.
Please check the following steps and confirm if you followed the same steps to create sharing link to share a quiz as a template
- In Microsoft Forms, open the quiz you want to share as a template.
- Click Share.
- On the Share pane, click Get a link to duplicate.
- Click Copy next to the text box that displays a form URL.
When another uses this link and paste it in a browser, they can see the form and once clicked Duplicate it at the top or bottom of the form  generate the sharing link to share a quiz as a template?
- For the test purpose, please try generating the link for another quiz or form and then share this link with others, check if others can create duplicate for the new link. This will help us confirm if the issue with a specific link or the other links have the same issue.
- If possible and if it does not have any sensitive info, please provide us with the link, we’ll check if we can create the duplicate form.
Regards
Neha