WLED is nice for 1-dimensional LED strips, or if you don't really care how the animations project on your LEDs, but anything in 2 dimension is painful, the grid mapping in 2D is just overly complicated and obscure. I barely got my simple LED matrix working and I've been doing LED grids with my own software for over 10 years (so I know how easy it can be). WLED was just an awful experience for 2D led arrays or anything more complex than a single LED strip.
Yes I have used it recently. WLED is a joke for anything other than 1-dimensional arrays. It's the way the pixels are addressed and mapped in 2 dimensions that is the problem with WLED. It's especially difficult if your "grid" is anything but an exact square or rectangle, with skipped pixels, or multiple mapped areas, etc. I found it all to be extremely frustrating and a badly designed system. I tried WLED to see what the fuss was all about, and I was not at all impressed. I have my own LED mapping system that works with 1-D, 2-D, and 3-D pixel mapped arrays, with arbitrarily placed pixels being simple to work with. Of course this is not what WLED was designed to do, and it shows. The 2-D mapping in WLED seems like a bolted-on hack.
There is support for oddly shaped arrays but you gotta use a custom mapping function, there's a generator online for it. The discord is really helpful.
