Cannot login FaceTime & iMessage in iPad 2

Hi folks,

I bought a new iPad, and was trying to login the FaceTime & iMessage.

While I put my iCloud account details correctly, @me.com email address and correct password, and then click Next.

Somehow, it returned to the previous step again, with no error messages.

I clicked Next again, however, it keeps going back to the first step (login page).

Both Facetime & iMessage come to the same problem.

I tried to search the solutions everywhere, and I did try to change the DNS no. to 8.8.8.8. However, it still doesn't work at all.

Does anyone know how to fix this login problem? This drives me crazy.😟

Thanks everyone.