Rajiv Gandhi Proudyogiki Vishwavidyalaya [RGPV] — username password mismatch

My name is aman srivastava, i have registered in rgpv portal but now when i m trying to log in it shows that username password not matched and when i have tried to reset password by forget password no, i didn't receive any email with the reset link, please sir help me so that i can go for further process of form filling.
My username is — 0105ca183d08.