Hello,
Greetings of the day!!
I have been through with the details you shared, I am interested to assist you for the work you seeking for. I am experienced with working with existing code (making modifications, adding features, fixing bugs, etc.)
>> Please share the source code of the app and corrections that you need in the app.
I am capable of starting your project as soon as possible according to your criteria with your permission.
Regards,
Hardeep