@DTS Engineer I have just contacted them and was just told to wait for the issue to be fixed. Error is ENTITY_UNPROCESSABLE.BETA_CONTRACT_MISSING, seems to be a recurring issue in the forum as well.

@DTS Engineer I have the same issue and I see many others have as well. There is no way to fix this right now and I am unable to have my app on testflight because of this.

I'm having the same issue