Hi, thanks for your suggestions but in ESET there is no obvious Firewall. Went into set up / computer protection / web access pathway an disabled but still couldn't submit return. So now will look elsewhere for solution!
I have recently had to upgrade SAGE software for Making Tax Digital but I have been told the reason I can't submit a VAT return on the SAGE software is because of my firewall.
Any advice on how I allow SAGE to send VAT info to HMRC?