Pearson Vue ,unable to login

I registered on Pearson Vue and received the email that I had created a Web account - 13/03/24 and scheduled an exam for 14/04/24. On 14/03/24 when trying to login to the site - https://navigator.pearsonvue.com/Navigator/pleaseSelect, I received a message 'We are unable to verify your details...' I have searched but could not find any website that provides an immediate response, also most of the urls that I've tried did not load at all. I have an exam tomorrow and if unable to take the exam, would like a refund. Also fix my login issue!!!! I thought that an international company would be more competent.