Mahadiscom / Mseb / Msedcl — Unable to register request for Billing Address Correction

Dear Team,
Through your online portal www.mahadiscom.in portal I am trying to submit request for minor address correction in bill, but after submitting all the details in required field, while submitted it, no request id/reference id generated, and there is no error displayed at all.

While submitted details old details display properly and in correction column new field updated, but request could not save.

I am using google chrome as well Internet explorer browser, I had tried for last 2 months, I check the same on my Laptop, Desktop and even mobile also.

Please guide me.