I accidentally clicked "dont give access"

[pegnftw]

It doesn't give me the opportunity to give permission... The apps don't seem to be asking for permission to access my photos

 

[J. A.55]

I don't know if you tried that, so here's another suggestion:
Delete one of the apps, restart your iPad (turn it off, then on again). Reinstall the app and open it. Maybe then you'll be asked for the permission to access the photos.

 

[leelai]

It doesn't give me the opportunity to give permission... The apps don't seem to be asking for permission to access my photos

What happens if you do use the apps? Does it connect with your camera roll so you can view and select a photo to use within the app?

Try JA's good advice here and let us know what happens.