According to the latest information about the ongoing N-Power assessment test shared on N-Power Facebook page, those who have not written their test have between now and 23.59pm August 31st, 2017 to login to N-Power test portal and write their test. There will be no extension said N-Power.
Remember if you are able to login with your BVN and phone number, then your BVN record match your application. Where you cant login, it simply means your BVN records don't match your application and your application journey has come to an end.
To write the test, simply visit N-Power website then click on test, select you programme and login with your BVN and phone number.