I bought & installed a Tapo C425 Security Camera a couple of weeks ago. It was configured & installed very easily, and works really good. Based on this I bought a second C425 and tried to install on same network & phone, and no matter what I do, I cannot get it to Pair. Spent two days trying different routers, different phones, turning off/on all features in router & phone that were suggested in various blogs.  

The one thing that is different between the working and non-working C425s is they have different Hardware versions. Good one is Hardware Version 1.6, and non-working one is 1.26. I assume that version 1.6 is the newest version, and 1.26 is the previous older version, and the newer version has had some hardware/firmware changes from previous version.

Any ideas on how to get this C425 hardware version 1.26 to pair?

Would like to get another C425 Hardware version 1.6, but when ordering on whatever website, tp-link, Amazon, Best Buy, etc, it doesn't allow hardware version to be selected.