We're still in beta so we're not advertising it widely except for an occasional link here and there, and 20 active users is actually a big number for us at this stage.
My Google Ads campaign is not very successful -- the CTR is good (25%), but the number of users getting to the registration step is pretty low. Too small a market I guess, but I still hope to bring the rest through retargeting.
Plan for the New Year: advertize it to Italian learners using the texts we recorded recently.