I didn't get black knob

Hello. Peopoly

I bought assembled Moai 130. But I couldn’t find a black knob part.
I attached images, please check it.
And I already sent further details to support@peopoly.net
You can find my email for it.
I hope to send it as soon as possible.
Thanks

It’s unfortunate that the cover is missing
But it only act as a cover for the knob, to look nice. It does not affect the printer
So buying it from your local store would be a more practical option than us sending you just the part