PublicInput is designed to help avoid multiple entries from a single participant, even while Allow Anonymous is enabled. In order to do this, it restricts the number of times that an IP address can take the activity. It also drops a cookie into a browser to avoid duplicate entries.

Participants are not restricted from taking the survey at this point; instead, they are asked to log in.

Often our clients would like to enter in participation – survey results, comments, etc – collected offline. The Meetings & Offline tab allows you to add multiple responses using the data entry button.

If you are at an in-person event and would like to collect feedback and responses from one device, use a kiosk, which is located under the Meetings & Offline tab in your project. 

If you would like to disable this IP restriction, you can turn it off under the Settings tab from within the project.

Related articles:
What is Participant Anonymity?

preventing ballot box stuffing and spoofing with ip address monitoring
Requiring login if duplicate anonymous responses are received from the same IP address
How can users at the same location take my survey?

How to let multiple people take a survey from the same device or IP address

how to create a kiosk survey