Depending on the page you are on, this might happen if there are a lot of images to load, it might just take awhile to load each image.
If you see gray loading bars that never go away - try refreshing your page or check that you don't have extension blocking Mintable from loading.
If that doesn't work, make sure you don't have any browser extensions that might be blocking our site from loading.
We don't have pop ups for ads, or anything dangerous on our site. So feel free to disable your extensions that might block our app.