i can start right now and can fix all bugs in just one day, but you have to share your source code i will do it on my MacBook quickly, i have latest MacBook pro 2019, latest android studio ide,i have a latest android physical device which supports SDK 29, i have 9 years of experience in native mobile application development, and can do this project in very low budget which is 5000 INR, let's start the chat for further discussions, thanks.