If you'd like to change the server to survival again, you'd need to create a brand new world. This can be done through the "Worlds" tab.
How To Enable Hardcore Mode?
Head over to the Game Panel and stop your server.
Navigate to the ‘Files’ tab and go into your active world’s folder. From here, download the ‘level.dat’ file.
Once downloaded, delete the ‘level.dat’ and ‘level.dat_old’ files from there entirely.
Navigate to the ‘Tools’ tab and open the ‘NBT Editor’ from here. Upload your downloaded level.dat file.
Search for the ‘hardcore’ option and change its value from ‘0’ to ‘1’. This will enable hardcore.
After that, click on the ‘Save’ button to save this file. After that, navigate back to the ‘Files’ tab and into your active world’s folder. Upload the new saved ‘level.dat’ file here.
Start your server and your server will be on hardcore!
Congratulations, you've successfully changed your server to hardcore mode. If you have any issues or concerns, please contact us through the ticket system.