My plugin is inactive for over 3 weeks and can not be updated. Has anyone a solution for that? There could be a problem with WP-Cron is the message, but I did not change anything in WP-Cron
You should make sure your Hotel Booking plugin is up-to-date first in order to be able to update one of its add-ons. Also check that your Hotel Booking and its add-ons licenses are activated. Navigate to Accommodation ->Settings ->License tab for the Hotel Booking plugin license and Accommodation ->Settings ->Extensions ->Desired add-on tab to activate the corresponding add-on license.