Your problem is very strange.
Do you have tried to disable all wow addon?
Do you have tried to reset all wow keybindings (don't forget to restart bot after).
Can you launch this wowmacro ingame and tell me result written in wow chat:
/run key1, key2 = GetBindingKey("SITORSTAND"); print(key1); print(key2);
(Try also to quit all useless software launched on your computer, teamviewer by sample can cause bug)