Hi @Sambari_Manikanta , my only suggestion for you is to try out step 2 here. If it doesn’t help, you need to keep talking to Coursera for suggestions on how to solve it or what other options you have regarding this matter. Coursera manages your account and access, you need to submit your assignment to Coursera to pass the course, and you need to get your certificate from Coursera. You have to go through them.
PS:
You are posting the question on course 1 week 2, so if you can access week 1’s lab but not week 2’s, it is likely a device problem and it is worthwhile to try out step 2.
If you are never able to access any lab and still in the first week, then it’s likely that you are still on your trial period and may be eligible for a refund (read the refund policy for conditions).
In any case, If you don’t have access to a device that can open coursera’s lab, then you may want to request for a refund first.