I am co-owner of a quiz in Forms, I send the link today to my students, and now I do not see any responses (0 responses), the professor that was originally the owner doesn't see them either...did any of you had a similar issue?
Also I wasn't able to copy the quiz in forms, I had an error, I guess this caused this issue.
@Natalia_Lazreg the only time I've seen that was when one of our staff sent the Share to Collaborate link (at the bottom of the Share panel) instead of the Send and Collect Responses link (at the top of the Share panel). So you might want to check you've sent them the correct link.
Rob Los Gallardos Intranet, SharePoint, Website and Power Platform Manager (and classic 1967 Morris Traveller driver)