I just have a question, about the dynmap

I have a square instead of a rectangle, but i put the right command to have a rectangle

1 - chunky world world
2 - chunky corners -24576 -12288 24575 12287
3 - chunky shape rectangle (you can skip this tho iirc)
4 - chunky border add world

That square looks way too close to spawn. I'm assuming you have another world border marker there (maybe vanilla /worldborder). Either way, please join the Discord server if you need help using chunky, we can help troubleshoot usage questions more there if you are still having issues!