So in effect nothing has changed and the issue still persists.
Unless of course VM have been quietly changing some stuff in the background!
I doubt that we'll ever hear exactly what the issue is but - and this is just a stab in the dark - if were to mention 'mixed content blocking by default in the latest Chrome release' would I be a million miles away?
The customer service from Virgin Media was a nightmare for me when i had this error 606 problem for ten days.They kept telling me to change my password but as i couldn't access my virgin media account through any browser on my laptop how was i supposed to do that? Same problem on my mobile.They also always denied it was a known problem. I rang at least 17 times and spoke to many unhelpful at times customer service people.One even cut the call and another one told me he wasn't going to start arguing with me.Eventually i insisted on being put through to a manager. Virgin must have done something at their end then because shortly after the issue was resolved.Over the years i have always found customer service abysmal and it still is today.
customer service is poor because VM dont invest in it. They off-shore, they pay peanuts, they dont provide much staff training and staff turnover is high. It is the accountants that run the business. If we paid more, it "might" be a little better. life !