Why can't people post on my padlet?
Y'all would not believe the number of times this question is asked, don't worry, it's not you, it's us. Usually the culprit lies in the share settings.
Check on your Padlet's visitor permission settings by clicking on the Share button on the top right.
You'd have to make sure that visitor permissions are set to "can write" for others to be able to contribute to the padlet.