Sharing this for the new folks.
The common trap for young players is to make sure the web address (URL) is a link direct to the image and not to the Google Photos page containing the image.
This is the usual error that results in a failed image. Google wants to promote itself to your friends so the default 'Share' link that they provide is to a Google page containing the image and not a direct link to the image. This default page link will not embed the image on any forum nor any web page.
So... if your image URL looks like this;
Code:
Shared album - David Green, Tech Know Logic (TechKnowLogic) - Google Photos
the image will not display.
The fix
1. Open Google Photos in Chrome or Firefox on a PC* or Safari on a Mac
2. Browse to the photo you wish to share on these forums.
3. Click the photo to enlarge it.
4. Right click and copy the image URL (Chrome = Copy image address, Firefox = Copy image location).
* this fix will not work with MS Internet Explorer or MS Edge.
Your image URL will now be very long and random looking, something like this;
Code:
Error 404 (Not Found)!!1