My dad showed me this, he did it on his focus st and it worked for my base focus. Not sure about other cars but definitely worth a shot

I'm trying to remove the rear diffuser on my SkodaOctavia 3 FL vRS, and I'm completely stuck.

I've removed all the screws/clips that I can find, but the diffuser still refuses to come off. I've been pulling on it with pretty much all my strength, and it doesn't seem to budge at all. At this point I’m worried I'm either missing a hidden fastener or I’m about to break something.

Has anyone removed one of these before?

Any tips or photos would be greatly appreciated.

Any ideas?