Finallyyyyyyyy, I connected correctly the app with the firebase.
New features:
-If you register manually, a code will be sent to your email for autentication.
-Once registered for first time, your default role will be “Comprador”
-To change to role “Socio” you have to be older than 15 years old (your age >= 16), have a valid colombian cellphone number and a valid address. (This last part is not fully implemente by now, I will have to push soon to add this feature JASKJAKS)
-No more emojis when publishing the products, now you can add a picture of less than 5mb
-Now there is a button to donate the product :D

I will continue working on, I hope you like my progress. Any advice or suggestion is validd