Apps do not have access to photos after IOS 13.7 update

Hey there, ever since updating to IOS 13. I cannot upload a photo via any app. It always says "this app does not have access to your photos, you can change this in privacy settings" when I go to "photos" in the privacy settings, it says "apps that have requested access to your photos will appear here" but there's nothing there. It's like it doesn't realise these apps want to have access to photos and stuff. I deleted some apps Facebook, Instagram and re-installed it, clicked "allow" when re-installing and no change. It's really annoying me, as I can't even upload photos to Instagram and that's the whole point in Instagram! 

I've googled it a million times and nobody seems to have the same problem, and if they do they seem to have solved it by going to privacy settings. 

I've even went into the seperate apps in privacy settings and again it doesn't seem to realise that the apps even want access to photos. 

Please help!