Unable to take final test

when i click the link given in the certification test it is displaying that the “sorry we couldn’t find that page”.Anyone help me to take certification test.

To give the certification exam, please go to cloud.boltiot.com/training and sign in using the same email ID used to purchase the training on shop.boltiot.com.
Click on “Take certification exam” to go to the exam page. Over there, you will need to enter the course access code to start with the exam.

In case if you have made multiple orders, then you will need to choose which order you want to take the test for and click on OK.
This will open a new tab where you will need to enter your course access code to access the exam.

Please enter the email ID and the password correctly. This will be useful if for any reason you are unable to submit the exam.