Yep you’ve cocked-up there
The shape of the staining around the edge under the plugs looks like it is over wetting from prespraying rather than from rinsing, what did you put your prespray down with?
Don’t use a rug section as a true comparison of the carpet, the carpet will never look the same as a new piece of carpet.
It’s a tricky situation if you had done that to my carpets I wouldn’t let you touch the carpets again, plus looking at what you’ve done i’m Doubting your ability to put it right, I mean this with the upmost respect. This why I think you should always be friendly with your local competitors , you need someone with more knowledge & skill than you to accompany you to this job and help you sort it out
It needs a major restoration with an acid treatment, this is a big job and you need to make the decision whether to attempt it or hand it over to your insurance company