Median won’t let me change Bundle ID (App Store connect + manual signing failing)

Hi all,

I’m wrapping a Base44 app with Median to ship to the iOS App Store and I’m stuck on Bundle IDs/signing.

In Build & Deploy → iOS IPA → Configure, the Bundle ID field is read-only.

When I click Verify Bundle ID and App Record, Median says no app with this Bundle ID exists in my App Store Connect account.

But I already created the app in App Store Connect with that Bundle ID.

I also tried manual signing (uploading .p12 + App Store distribution profile), and Median reports the certificate/profile as invalid.

Questions:

Can I change/reset the Bundle ID for an existing Median project, or does support have to do it?

Has anyone successfully re-pointed a Median project to an existing App Store Connect app, or is it better to start a brand new Median project with the correct Bundle ID from the start?

Any guidance on the simplest path to get one iOS app live from here would really help.