Test flight build release arm64 required in UIRequiredDeviceCapabilities

Hi,

All of a sudden I cannot release new builds in test flight.

I have had "Required device capabilities" with arm64 set, and haven't changed anything related to it that I am aware of.

If I google around, the only difference I can see is that xamarin doesn't use: "UIRequiredDeviceCapabilities", but has "Required device capabilities" in Info.plist.
Any ideas as to what the problem could be?