More information: I cant delete bindings/commands from the radial menu. I have aktivated the option "rightclick to edit" for deleding commands but it doesent work.. I have to edit the json to delete commands..

You are giving me nothing to go of?
What Minecraft version are you using? What MineMenu version are you using?

Iam using 1.12.2 and the newest version from the mod MineMenu-1.12.2-1.6.3-universal.jar

I really can't reproduce the issue. It even updates the json right away for me.
Only thing I can think of is that you are editing them wrong? By default you have to hold shift, then clicking on the icon to open up the edit menu.
GIF of me successfully deleting both types of buttons from the radial menu: https://i.imgur.com/5Tj8ixo.gifv