Add Wordpress plugin The Off Switch, go to /wp-admin/options-general.php?page=wp-avoid-slow
Toggle On the switch “Restrict REST API to Logged-In Users”
The WordPress REST API is publicly accessible by default. Restricting it to authenticated users prevents unauthenticated enumeration of posts, users, and other data. Third-party authentication methods (OAuth, JWT, Application Passwords) are not affected.
Closes unauthenticated REST API access
Off by default. Will break public REST consumers such as headless frontends, mobile apps, or any plugin that queries the REST API without authentication.
reload HivePress site (F5) and try to login (front-end link) The web form just reloads upon submission. I have not seen any error/warning inside admin area or in the log (enabled DEBUG in wp-config.php
Maybe this is not much important, maybe the code can be edit to tell user what is wrong.