The issue have been resolved thanks to following link,tank wrote: ↑05 Oct 2021, 23:49they persist for some and not others. days ago it was intermittent for me now works every time
CA changes have been comming for a long time and kicked down several times over the years but most blogs said it would only be old OS's browsers affected.
I keep looking at related blogs and the issues are affecting even large tech companies sites. everytime i find something someone has tried i do attempt the same patches
https://www.stephenwagner.com/2021/09/30/sophos-dst-root-ca-x3-expiration-problems-fix/
I had to install certificates (downloaded from above link using firefox v46.0b8 ) manually and restarted chrome browser