Hi, problem with your demo site. Steps to check issue:
Go to https://www.jomsocial.com/demo Click on "Back-end" button (both Joomla 3+4) File not found
Fix? Thank you
accithanos Hi Kindly use this URL : https://js-main.demo.jomsocial.com/administrator/ I notified the team and the the typo error in URL will be fixed.