I have now looked into this matter.johnboy wrote:I can click on the thumbnails and view the adverts fine using ie11, but the thumbnails are missing when I use Chrome.
Until now I had only ever used Firefox and Microsoft's IE and Edge browsers and never had any problem with them regarding the display of my website.
Now I have downloaded and tried Google Chrome at my place of work, and there, too, all pictures on my website including the thumbnails are displayed OK as normal.
Therefore I cannot reproduce the problem and do not know what to do.
I have also done a bit of Googling and found hints about some ad-blocking extension for Google Chrome which may cause pictures (perhaps within "<a>" hyperlink tags, like my thumbnails which link to the larger pictures) to fail to show up. That extension would have to be disabled.
Unfortunately I cannot find anything more specific.
If any HTML expert reading this knows anything definite what I can or should do to prevent this, please let me know.