Remove Boxcryptor Secomba Folder from Macintosh HD

[WorldWS]

Mac Pro Ret 2016 mid 2014, running Cataliina 10.15.3

Installed and tried out boxcryptor a few months back.
Stoped using it and there is the Secomba folder in my Macintosh HD folder.
Tried to follow the instructions on :-

Remove Secoma folder

I uninstalled Boxcryptor and a folder called Secomba still remain on root. How do I remove it? It will not let me move to trash.

boxcryptor.community

• Boot into recovery mode
• in terminal I issue: csrutil disable
• reboot
• in terminal: sudo chmod -R 777 /Secomba
• Using Finder I add my username to the list with read/write
• Reboot into recovery mode
• Mount HD
• In terminal: cd /Volume/(name of the HD)
• in terminal: rm -vrf /Secomba
• In terminal: csrutil enable
• Reboot
• Confirm the folder is now deleted.

However, password fails after

• in terminal: sudo chmod -R 777 /Secomba

also, I am only able to read the folder, not read write....

thanks in advance.
WWS