RTO MURSHIDABAD, WEST BENGAL, WB-57 Larner Licence Slot Booking issue

I am facing an issue while entering my details to apply for LL Test Slot Booking. Whenever I try to fill the application through my Application no. it is displaying the message Entered Application No. is approved. "Slot booking is not available to next 30 days" while applying using my Learner’s License No it is displaying the same message I request you to kindly look into the matter and do the needful Action plz.. My application No is 2004757819
how is it possible to continuously booking not available??