I got this message from Apple 'couse they rejected my app:
Guideline 5.2.1 - Legal - Intellectual Property
The seller and company names associated with your app do not reflect the name "Koala" in the app or its metadata, as required by Guideline 5.2.1 of the App Store Review Guidelines.
Your app must be published under a seller name and company name that reflects the Koala￼ name. If you have developed this app on behalf of a client, please advise your client to add you to the development team of their Apple Developer account. If your client does not yet have an Apple Developer account, they can enroll in the Apple Developer Program through the Apple Developer website.
To request an update to the company name or entity type associated with this Apple Developer Program account, the Team Agent will need to edit the account information. On the Apple Developer website, go to Account, then select Membership. On the Membership page, click "Need to edit this information?" to submit your requested changes.
Note that submitting documentation showing permission to publish this app on behalf of the content owner or institution will not resolve this issue. This app must be submitted under the content owner’s own Apple Developer account.
To request a fee waiver for nonprofit organizations, accredited educational institutions, or U.S.-based government entities, follow the steps outlined on the Apple Developer Program Membership Fee Waivers page.
I'm a professional freelance developer and the app should be published on my customer account (my customer asked me to develop an app for his customer).
So I think that any new app I will need to make the customer to sign a developer program with Apple (99$/year). This is not good !!!
Any suggestion ?