Trying to translate Membership2, need help

I've placed the memerbship2_ES.mo into the correct folder, all seems to working.

However, I notice a few items that aren't translating.

Please see attachment below.. im not sure where to go from here. This page only appears after a user has selected a paid membership.. its the page in between the listing of memberships and making payment with paypal.

But also where it shows the memberships listed(previous to this screenshot), I cant get Registration to translate to spanish