Hello,
I can help you or your developers to manage and upload app on AppStore. I will also guide you how to create certificates and profiles under your developer acocunt.
I am an iOS developer for more than five years and I can help you with your requirement.
I have uploaded more than 70 mobile applications to the Apple AppStore and confident about Apple's policies and requirement details we need to submit while uploading the app.
I can help you to generate screenshots as well as other missing details if required.
Let's connect. I’d love to hear from you.
Thanks,
Akash