Alot of times the lack thorough cleaning before sanitizing is the culprit. Don't take this too personally. You might need to take a deeper dive on what items that come in contact with your wort. Especially those things that are hard to clean; Valves, hoses, airlocks, bottle fillers and etc.
I mentioned the valve thing because I routinely find the valves have yeast in the crevices. I usually hit it with a toothbrush really good. I look really well at the lid too.
Scratches in plastic are bad. I use a sanitizing bucket to do all of that work. This way all those brewing tools won't scratch up my plastic fermentors.
I also find that I need to occasionally soak my pails in mild solution of bleach-water since they seem to get yellowed by yeast somehow.
Iodophor is a good sanitizer, I think one-step is as well. I tend to overdo the time they get exposed to sanitizer. It doesn't hurt. I am also super-anal about getting the correct mix concentration. I want the PPM high enough to kill but low enough so I will never taste it beer.
You still might get an OK beer, it might be a bit farm-like of have a Belgian charactor. I would be very carefull with cleaning your equipment from this point on for now. You don't want the bug to transfer to your other equipment. I would be very patient with this beer it may not behave like typical beer yeast.
Good Luck. - You never know it might just turn out awesome. Sometimes mistakes can be good things.
Have you tasted it? If it tastes good, it might be worth letting go.
