Hi there!
What you're facing is very common with the upload process. The App Store has a lot of criteria and they can be confusing.
I have uploaded a lot of apps on App Store and two of my own apps are live on App Store:
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I'm an iOS Developer with 5+ years of experience and I can help you out in your budget.
Please get in touch so that we can discuss further. You can also check my profile for reviews, certifications, portfolio, recommendations, and other credentials.
And please don't worry about the extended estimation of time. It might take less than expected to find the issue that's stopping the upload process.
Looking forward to hear from you.
Thanks and Cheers!
Lokendra Kapoor