Could you please share your github account link, or source code of the project so that I can take a look?
I have reviewed all your requirements and gone through with your provided links, I'm sure that I can resolve it, as I already worked on similar kinds of projects.
I'm a Proffesional android and IOS Developer. I've 5+ years of rich experience in working with Native & Hybrid apps using Swift, Kotlin, Java, React native, Flutter, and more.
Please advise if you have questions. I will be glad to reply to you asap. I am available for a call to discuss the project further.
Regards,
Veeran Jain