Dear Hiring Manager,
I have read your description carefully and have checked attachment. I have cleared about all points for your simple android app using MercadoPago´s android SDK.
I am team leader here and have a good grip on these functionalities and can easily use this android SDK to collect your user's credit card details and to take amount. We will implement functionalities for login, register, edit service, and amount, etc. as per your requirements.
Hoping for a positive response from your end.:)
Thanks & Regards,
Ebizz Infotech