popeating

popland

Post expire date Sidebar for Gutenberg will add a Gutenberg sidebar where the user can enable Post expiration by setting an expiration date and time and a status (draft, trash, private) the Post will revert once expired. Expiration date can be removed or rescheduled at any time. Post expire date for Gutenberg uses wp-cron to schedule the single event, please be sure you have wp-cron active on your installation. 
You can print the expiration date and time inside a post, using the shortcode [expiration_datetime] inside your post.

Post expire date Sidebar

Post expire date sidebar for Gutenberg it's a minimal plugin that allow to set an expiration date for posts

Cyril Batillat

By default, WordPress can protect each post with one and only password. This plugin gives you the possibility to assign multiple passwords on each post, with an expiration date.

p5 : Plenty of Perishable Passwords for Protected Posts

Specify multiple passwords for pages / posts / custom post  types. An expiration date can be set for each password.

Post expire date Sidebar vs p5 : Plenty of Perishable Passwords for Protected Posts