Yes, go for it!
You can copy or modify and use images you download from Paprika Photo, even for commercial purposes. You can use images from Paprika Photo on social media platforms.

No, don't do it!
You can not redistribute Paprika Photo's images (on a website, website builder or other SaaS apps, etc.). You may not claim the images as your own. You can not resell Paprika Photo's images (stock photo, etc.) If you have any question, you can contact me: info@paprikaphoto.com

Attribution or credit are not needed but only greatly appreciated. You can use: “Photo by PaprikaPhoto.com” with a link to paprikaphoto.com.