What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
To allow other users to view submissions of your form, you should create sub account.
Upon taking a closer look of your account, I found that you have already created a sub account and allowed them read access to all your forms.
An invitation email should have been received by "firstname.lastname@example.org". Sub account user needs to register a free JotForm account using the same email address on which the invitation email is received.
Once the sub user logs in to their account, they will see a link "Shared with you". Upon clicking on this link, they should be able to see the list of shared forms and they can also check the submission records as well.
Hope this helps.