After looking at the my email and the download URL a bit more...
It seems the [color="Blue"]=[/color] character is sometimes placed throughout the email and is incorrectly in the URL.
Might this a product of translation from a french OS to an english OS?
Example text:
".....any question, fe[color="Blue"]=[/color] el free to...."
".....able to pre-download the grea[color="Blue"]=[/color] t campaigns...."
The same [color="Blue"]= [/color] breaks the download URL: //www.ageod.[color="Blue"]=[/color]telechargement.fr/dl.html?MAIL={email}&C={code}&Lan[color="Blue"]=[/color]gue=EN