I need to modify Codecanyon Android app

Hello, I am looking for an experienced mobile app developer to help me modify an existing Android application from Codecanyon. Specifically, I need to insert a payment gateway into the existing app, upgrade its design, and fix any bugs.

I am not sure what my budget is, but I do have a timeline I need to meet. If you feel you can accommodate this project, and deliver it on time, I would love to hear form you.

Thank you in advance for your interest and I look forward to working with you on this project soon.