imgur is tricky. Each image will have 2 url's. You need to make sure you get the one for 3rd party hosting. The other is just like its web url. The main way to find the 3rd party hostint one is to go to the page the image is on, hold down on it, and select open in new tab or open in browser, then select the URL for that page. This should work but idk if it will for all cases. good luck