If the canopy on your Oscar Mx will not stay open when it's fully extended, it's likely that it hasn't been locked into place correctly. This is very simple to resolve.
When you fully extend the canopy, give it an extra little nudge as shown in the video below. This puts it into a fully "locked" position.
Here is a link to a video showing this:
This should solve the issue but if you continue to have issues, please email our Customer Service team at firstname.lastname@example.org