I am an idiot!
I have a settings.lua file that creates the settings panel via libaddonmenu. So in
Lua Code:
LAM:RegisterAddonPanel("myAddon", panelData)
LAM:RegisterOptionControls("myAddon", optionsTable)
I indicated myAddon, but you need to specify myAddon-settings.
Changed and it worked.
@sirinsidiator thanks for pushing everything to check!
@Baertram thanks for the good tips!