compiler isn't being helpful

[pyro_hedgehog]

so, to send some files I want to send over discord, automatically using the rubber ducky, I need to press CMD SHIFT U. Problem is whenever I try and use the online compiler(https://ducktoolkit.com/encoder/) it won't work with all 3 buttons at once... it said to report it, so here's the report

[pyro_hedgehog]

(important things i should have put in the title) Rubber ducky, bug