Funnily enough, Merlin was also being discussed on this other thread this week, don't know if you'd seen it -
Hello 👋🏻 This is my first post so any tips gladly received. This little one is in my garden (January 2024). I’ve tried to work out which one it is but can’t be certain. I have more photos and video. Help please?
www.birdforum.net
Going from that thread, maybe you have the wrong pack/geographical setting??