@xianc78 @digdeeper Sorry to bother you too much, but it's a better idea to download and host all the images locally for many reasons.
Like breaking due to invalid SSL certificate, someone else remotely changing images to something else, making requests to other domains which slows your site down by between a bit and a whole lot (depending on the remote server), and so on.
Also, if you hotlink image files, make sure you always link to them as HTTPS instead of HTTP if your site goes over HTTPS, otherwise causes stuff to break and all that.