As a result of a security breach, OCR have suspended all CPC online (e-tests) until 2020. See following email received from them –

Certificate of Professional Competence (CPC) for Transport Managers

We are sorry to confirm our on-screen CPC tests are suspended for the rest of 2019. We apologise for the inconvenience caused but we have made this decision in the interests of fairness to everyone taking CPC tests.   
This affects the following qualifications:
CPC (Certificate of Professional Competence) for Transport Managers (Road Haulage) Level 3 – 05669
CPC (Certificate of Professional Competence) for Transport Managers (Passenger Transport) Level 3 – 05670