Question about Vogels Thin 546

Hello all, I have purchased a Philips 55OLED856/12 with the Thin 546 wall mount suggested. Although the installation app (TVMount Guide) considers the combination to be "perfect", the strips that have to be mounted on the back of the TV do not fit. In my opinion, they forgot to take into account that the TV has an elevation on the underside. Does anyone know the problem, or am I just being silly? Thank you