Can I restrict users to reply at most once in the topics in a certain category?

[Heliosurge (Dan DeMontmorency)]

This post may help with part of the css.. You just need to add something that checks if user has posted/replied once.

Limit one post per person?

Your use case can be achieved with CSS. Change .category-NAME to the category you’re targeting. .category-NAME { // hide reply buttons button.reply, .timeline-footer-controls button.create, .topic-footer-main-buttons button.create { display: none; } // just in case &:not(.staff) & { .topic-post:not(:first-of-type), .time-gap { display: none; } } } This will remove any reply button from the posts in the selected category. [Capture] The use case in the OP requires somet…