Hi noemi! I merged your two accounts into one. You should be able to login with the username/password you created on both computers. If you want to hook up your FB account, you can do that too, but all it does is allow you to login without typing any login information.
Regarding the saving gear - make sure that a suggestion pops up, and you select that suggestion before saving. Only gear that is in our database will save unless it is added to the database first. I realize it's a little confusing.