It's necessary to insert an image from phpBB forum into Gmail message, for example https://colnect.com/forums/download/file.php?id=569926
but get error:
We can't find the image at that URL.
On other hand I can insert picture from another phpBB forum, for example https://forum.openoffice.org/en/forum/download/file.php?id=38919
Сould you help me and tell what is wrong with first picture or forum settings at colnect.com?