How can I uninstall an app I downloaded, that won't let me uninstall it?

I downloaded this app called 'Photo Editor' (pink logo with letters 'fx' on it) on my HTC Desire 510, I went to uninstall it, but it won't let me do this. Other apps still let me download it. I have tried doing it in settings, google play store, second home screen menu, in the app itself, and none will let me uninstall it. I can't find the app in the play store, it's as if it's deliberately not letting me uninstall it. It takes up 30MB, which is a pain seeing as though my phone can only hold a small amount of data. I have been researching what to do but no one seems to have the same issue. Can anyone help me please? Thanks in advance.