NOX accounts varvolgyi

Hi, we're having the same issue/question. I'd like to set up a variable direct debit, and according to the information on gov.uk it is possible by logging into our account. https://www.gov.uk/pay-paye-tax/direct-debit When I do that and start filling out the information, I end up at a question asking what amount I want to pay. And it's a mandatory field. If I want to pay a variable direct debit, then there is no need to give the monthly amount. I tried to call, but apparently due to long waiting times, they're not taking any calls and hang up. Please check the conflicting information on your website, and the fields in setting up the direct debit, and advise. Many thanks