ERROR_VUE_WIDE_BLOCK while scheduling the exam.

A web search of your error shows it comes up a lot, not just related to AWS but also for Microsoft, Cisco, VMware, The Open Group, and others https://www.google.com/search?q=ERROR_VUE_WIDE_BLOCK

The most common answer appears to be that the account is blocked. To get this removed you need to contact Pearson Vue directly https://home.pearsonvue.com/test-taker/FAQs/8-My-account-has-a-block-How-do-I-get-it-removed.aspx

Unfortunately the AWS re:Post community doesn't have any visibility of your AWS Training and Certification account, and I'm afraid nor can it help with unblocking your account.

Hello! You need to have aws pearson voucher and then choose a remote schedule. Otherwise contact directly Pearson VUE on https://home.pearsonvue.com/Test-takers/Customer-service.aspx