We've used all kinds of combinations and it's not a problem

Here is the message they provided Guideline 2.1 - Performance - App Completeness Issue Description The app exhibited one or more bugs that would negatively impact App Store users. Bug description: "Failed to connect to server" error prompt during login Review device details: Device type: iPad Air (5th generation) OS version: iPadOS 18.1.1 Next Steps Test the app on supported devices to identify and resolve bugs and stability issues before submitting for review.