How to limit post form entries
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With WPUF v2.8.10, you can limit entries to any form you want!
Navigation
Go to wp-admin→ User Frontend→ Post Forms→ edit/create a form→ Settings→ Submission Restriction.
Configuration
Activate the Limit Entries checkbox. You will now get two new fields:
- Number of Entries: Enter the submission entry limit you want in this numeric field.
- Limit Reached Message: A default message your users will see when the form loads has been given with every post form. You can change this message. Users will be prevented from submitting a new entry when this message appears.

When you are done configuring, click on Save Changes.
So, after reading the submission limit, users will see the Limit Reached Message,

Note: This is not for any specific user. It is a global settings.