If the browser version you are using is lower than 6.1.2015.1007,then you can update to the latest one then retry.
Besides,we advise you could clear cache and disabling the extensions one by one,check the fire wall settings to see if set any limitation for that and turn on/off speed mode/cloud boost then retry.
If still no use, pls send us your image link,screenshot for further check.
Besides,pls also tell us was there any error prompt pop up when right click to save image?
Looking forward to hearing from you.