I know this thread is a bit old but I wanted to post some updated information. I sent a message on their website contact form asking for clarification on IF both parties (husband and wife) need a notarized signature if we live in separate countries (me USA, her Philippines). This is the email response I received:
So for couples that marry and are currently living in separate countries only 1 notarized signatory is required. Hopefully this will save others a bit of time.