Irctc — Unable to book tatkal ticket "REGRET/CKWL1" before 1 day 10 AM

Address:

Pune, Maharashtra

I've tried to book tatkal ticket from Pune to Ahmedabad thorough IRCTC website in Ajmer express on[protected] at 9:50 AM. The train 16210/Ajmer express starts from Mysore on 8-01 and arrival to Pune on 9-01. When I've checked for tatkal ticket on 7-01 at 9:50 (before 1 day at 10 AM of actual departure), the tatkal status was "REGREAT/CKWL1#" which is not possible because as per government rule tatkal reservation is open before 1 day at 10 AM. Could you someone please let me explain how is it possible when before 1 day at 10 AM (before 1 day at 10 AM of actual departure) tatkal status was "REGREAT/CKWL1#"?