Did you enable ssh via /flash/cmdline.txt? If so the option won't show up in the settings add-on.
I guess the question is: did you (accidentally) enabled SSH in the Welcome wizard, or was the SSH option already enabled? Because it seems as if it was enabled, and thus the SSH option in the Settings addon becomes invisible.
I suppose the first question that needs answering: Is ssh already working, and have you simply assumed ssh is not working because you haven't found the ssh option?
As already explained, you won't see the ssh enable/disable option when ssh has been added to the boot command line, because then the Settings add-on no longer controls the service - your boot command line does.
Double check your boot command line (/flash/cmdline.txt for RPi/RPi2, /flash/syslinux.cfg [or EFI version] for Generic, no doubt something else for other projects - I've no idea what hardware you have) to ensure it doesn't include ssh. Paste the contents here if you're not sure.
I've been testing this today with latest master builds of LibreELEC and as far as I can tell it behaves exactly as described here, so if you're seeing something different in 7.0.2 then it's possible the issue is already fixed.
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However if you enable ssh during the wizard process you do not get the same settings . services option.
I'm not able to reproduce with latest master - if I enable or disable ssh in the wizard (with ssh not added to boot command line) then the enable/disable ssh option is always present in Settings > Services.
Although they may claim otherwise, the other user activated SSH during install which hardcodes it into syslinux.conf and this disables the normal on/off capability in the first-run wizard and settings add-on. From the next alpha build (7.90.008) the ability to force SSH has been removed as part of a general cleanup of the installer.
NB: If it is forced on, one reason for not being able to connect is an old (out of date) PuTTY version which is trying to use cipher suites that we no longer support in the SSL versions we use.
chewitt Is it still possible to force SSH? I don't have a display and seems like I can't access the Installation Wizard. I can only access the port :8080 on my local network but when I do I don't see the Installation Wizard. What am I supposed to change in the cmdline.txt file?
add "ssh" to boot params and the service is forced to start on boot
add "ssh" to boot params and the service is forced to start on boot
I'm sorry, but how do you do that? 
Do I need to access the ext3 partition on the SD Card? 'Cause I can't get that to work on Windows with ext2fsd either 
Assuming this is Pi hardware you edit cmdline.txt which is on the FAT32 partition.
Assuming this is Pi hardware you edit cmdline.txt which is on the FAT32 partition.
And how do you edit cmdline.txt on the FAT32 partition from Libreelec?
And how do you edit cmdline.txt on the FAT32 partition from Libreelec?
Same way as config.txt.
