QB's will not let me change tax year from 6th to 1st April

Thank you for your reply. My tax year along with my accounting year runs from the 1st April to the following 31st March. The UK allows your tax year to correspond with your accounting year where if your accounting year ends on 31st March the legislation over recent tax years now permit this to be treated as if it ended on the 5th April. As its needed to send quarterly submissions throughout the coming 2026/27 tax years as to make income tax digital I will end up submitting incorrect  figures as my transactions will be missing those between the 1st to the 5th April, as is the case in my present tax year when I go to my income tax app on QB's.