Read the given instructions carefully and then log in for the test.
If you have registered your mobile number on CHAND STUDY APP then only you can login from here.
When you click on the given link, a new website will open and something like this will appear where you have to fill the column given below.
When you click ok then a new website will open as shown in the above image, org code, DTRWV will be common for all but enter the same mobile number from which you have registered and purchased the course.
An OTP will come on your mobile, which you will click on VERIRY OTP after putting it in the column, then you will enter the course, which you can give the exam anytime from your laptop or computer or your mobile.