when I put a block, for example at the height of 80 grids or more, they are invisible, they can not be destroyed
It turned out that the plugin broke the blocks.
Now I do not know which plugin did it
Try removing or downgrading AntiXray to 1.2.3. There is an issue with the latest version which might be the cause of your problem. I’m the developer of AntiXray, I’m working on a fix. I will keep you updated.
Edit: The issue has been fixed in the latest version of AntiXray. Feel free to update.
Thank you for help