Did you actually install the OpenSSH package itself, or just the flip switch toggle? For whatever reason, OpenSSH is NOT a dependency for the toggle, so you can install the toggle without the actual package, in which case the switch will do nothing
Glad you got it sorted. The ssh switch is kind of a strange one, it seems that OpenSSH should be a dependency for the switch, but it is not. I think just about all of the other flipswitch toggles I have used depend on what they are switching (e.g., installing the f.lux switch forces you to install f.lux if it is not already, same with AdBlocker). There may well be some good reason for the ssh switch to be this way that I'm just not aware of