Nextcloudpi-config command not found


My nextcloudpi instance is now completely configured on my HDD with Berryboot with this image : NextCloudPi_RPi_Berryboot_10-04-18.

Unfortunately, I can’t change the config remotely (via ssh) because the command ‘nextcloudpi-config’ and actually all nextcloudpi related commands are not found.
This issue is similar to this one :‘NextCloudPi - why there’s no nextcloudpi-config?’, but it’s not solved.

I can’t physically have access to the raspberry-pi or the local network it’s on.

How can I do ?

Thank you for your help !

Now replaced by :