The problem is indeed room height. I built my wall to the specs of the Moonboard Mini (they are available on their website). Unfortunately that meant I had to g

The problem is indeed room height. I built my wall to the specs of the Moonboard Mini (they are available on their website). Unfortunately that meant I had to go for a 40 degree wall. I have maybe 3-4 routes that I can climb on that wall now, all with big/good holds. I cannot even do a route that's designated as V3 in the official app (I did buy the yellow Moonboard holds+one wooden set) but I suspect the grades are not for 40 degrees but for a less steep wall. In fact, I only recently managed to do one move on the small holds. Last week I finally constructed a circular route of about 20 moves that I plan to do as endurance training. My advice: just go to a gym and do it. Everyone will be super friendly and you can climb by yourself if you want. There's some jargon and it might be a bit tricky to figure out how you're supposed to climb routes but simply tell them at the entrance that you never climbed and would like a short introduction. Make sure the rental shoes fit, not too tight, comfortable but snug is what you should aim for. If in doubt, they'll always let you exchange them. Just start with the easiest routes and work your way up. It's very addictive and there's always something to try and eventually succeed at. Do it. First thing next year :)