Hello! I can make all necessary fixes for you.
I am mobile developer with 4+ years experience. I could make app according material design or using your own design, create custom elements. I have experience in commerce applications, working with maps, location, ads, payment and all other parts of android system. I have experience in creating apps for phone, tablet and android TV. Also I have an google developer account, where one of the apps with open source, so you can check quality of my code. If needed, I have a team of other developers.
You will get daily updates with some report.
Let discuss details in chat.
Thanks !