Nice cue! Your pictures are probably too large to download. If you are using Windows 10. you can resize them easily. or you can download a picture resizer.
for Win. 10,
1.Put your pictures into a folder. Open the folder with the picture or pictures you wish to upload. On the upper left corner the word "file" should be highlighted. If not click to select the file tab
.
2. Now check / highlight the picture you want. this will now make the "edit" option to the right in the properties box active.
3. Click on the word "edit" and it will open a new window.
In the second box from the left (on mine anyway) you will see the option to "resize" and also "rotate" if you also wish to do that as well.
4. Click "resize" you are offered a few choices now on how you would like to resize your picture. I personally choose "percentage" and "maintain aspect ratio"
5. Now click on the box that say's "100" and highlight the 100 and type in a value to change it to. (I have found that by setting my percentage to %60 they always upload and look fairly large) once you choose a percentage to change it too, click on "OK" this will change the look of your picture on the screen.
6. Now you can click on "file" in the left upper corner of this box and make a choice such as "save" "save as" etc. for this I just choose "save" Now my picture is %60 of it's original size. You can also just X out of the picture and an you should be asked what you want to do before it will close giving you another way to choose to save also.
Now if you have reduced the size sufficiently, it will upload here without any further issues.
A special Thanks to the guy's who helped me out with this very issue just recently,
Thanks Guy's!