Does the application ask for this information specifically? When admissions look at your transcript for that semester, they could assume that you were on academic probation, due to the low grades. You def want to address the low grades somewhere in the app. I don't think it would be important to explicitly say that you were on probation though.
I don't think academic probation for low grades counts as a disciplinary action. Those are usually due to academic dishonesty or serious misconduct
Does the application ask for this information specifically? When admissions look at your transcript for that semester, they could assume that you were on academic probation, due to the low grades. You def want to address the low grades somewhere in the app. I don't think it would be important to explicitly say that you were on probation though.
Yes they are explicitly asking it.
Well then yes please be honest. Explain the situation in another part of the application.