Hi propheticus,
Thank you for the prompt reply,
1. I haven't installed any Ad blockers.
2. There's no problem when the site is viewed with the portable versions of Chrome and Firefox, (
www.yoshlk.com)
3. I checked the same URLs in my 2 laptops which also run Avast, and ads appear without any issue, meaning you are correct.
As a last resolution I will try re installing Chrome and report back.