Dear Aspirant,

If you are not able to recieve OTP of mahacet on your mobile or your gmail then you firstly check your application form filled mobile number and gmail id with original one,if found same and right in the application form then you should contact to their helpline no. and you should also mail them for same reason or also complaint about same on their official site

Hope above information helps to clear your doubts regarding this..

Have a good day and great future ahead.