Dg Shipping — Unable to submit new application fir BSID

I am Sandeep Kumar Indos number 17EL0764 trying to apply for SID but it is showing that your application is in progress.
Last time I applied for SID in March 2021, and I got appointment on 6th April 2021 at Noida MMD. But due to urgent joining I could not able to went for my appointment and I cancelled it.
Still it is showing my appointment there and I am not able to submit the application for new appointment.
Please look into this matter and do the needful as soon as possible, it is humble request to you.