grade three assesment registration

Question

i am registering my grade three pupils for assesment number, those who were from the recent grade two, who are now grade three in their second term but the problem is that when i register in the CBA KNEC PORTAL under "add a learner" it says, "something went wrong"

i have failed to understand the reason for this, is it that the registration has been clossed?? please help, thank you.