Need to Change App from Portrait To Landscape

I have 2023 (6th Gen)iPad Pro (12.9”) UK edition running iPadOS 17.5.1.

My router is the UK Virgin Media Hub 5. The problem is the Virgin Media Connect App for broadband downloads, BUT functions ONLY in Portrait!

Therefore how can I alter App to correct to Landscape configuration so all will open in Landscape! Its **** typing & trying to read screen when what you are viewing is side on!