Miro does not show real saturation on created illustrations

I create artwork, on CMYK canvas and when I upload these to miro the image’s level of saturation are changed, why? I tried to re-upload them, download them from the miro board (to see if the MBs have changed, since the lack of saturation) and the images are perfectly normal.

So I don’t understand why, when I upload these beautiful full of colour and vivid images, miro does not deliver its full value.

Please help, Im an illustration student and currently using miro for feedback reviews I dont want to present lower quality pictures

Thank you,

Catarina