Exam Error

I have completed all the videos in the Inbound Marketing course. However, while attempting the exam, it showed that my exam was over and I scored 0 marks, despite not seeing a single question. I tried again today, but the same issue occurred. I’m unsure how to proceed and would really appreciate any assistance to complete my course."

I just got off customer service about this. They told me to clear my cache. I am going to give the test another go but this happened to me twice. Will this count as my 2/3 test chances, HUB?

how to contact to the customer service where is the contact support will you provide contact number to reach them

I also have just one attempt but I dont know how to reach them and how to solve this problem