Posted September 22, 2016
You should be able to, as long as your cdkey is added to EA account. Registering from in-game menu is unfortunately not working.
More detailed instructions can be found here:
https://www.gog.com/support/spore_collection/how_to_access_online_features
More detailed instructions can be found here:
https://www.gog.com/support/spore_collection/how_to_access_online_features