I'd like to welcome you to the QuickBooks Community, maxmax.
It's possible that you're subscribed to the US version of QuickBooks Self-Employed. You'll want to cancel it and create a new account with the UK QBSE version. You can click this link to make sure you're on the right page: https://quickbooks.intuit.com/uk/#price.
Also, our UK QBSE Help page is accessible anytime. You can search for articles or post again if you need help. You can tag me and I'll always be here to assist you.