Windows 10: Installed but does nothing

[thaskef]

I successfully installed solargraph from the command prompt via:
gem install solargraph

And it was successfully installed in atom:

But when I select the Ruby grammar and begin to code, I don't get any suggestions/auto-complete from solargraph... (I just get the built in auto-complete suggestions).

And when I push CTRL-SPACE nothing happens.

Is it perhaps the Command Path? Do I need to set that to somewhere? It doesn't explain anywhere and I can't find where solargraph was installed.

[thaskef]

Just discovered this other package which works:
https://atom.io/packages/autocomplete-ruby-rct

[mikwee]

Both don't work for me.