In wordpress app I use a plugin to hide the login page /wp-admin and /wp-login.php. Accessing these pages will then give the user a 404
BUT, it seems cloudron is sending a form of beacon signal to the wordpress app login page, to figure out if the app is up working or not. As cloudron does not find the login page, it detect it as an error and state in the cloudron admin panel that the app is "Not responding", even though the wordpress app is running fine.
It may look like this also prevents cloudron from creating automatic backups of the app, even if it is configured to do so. Manual backup seems to work though.