Generally speaking, they will update the firmware on their website. If there is no any update, I don't think there is any new about it or it's already discontinued.

We can't update the firmware with different hardware versions. Therefore, you can't install the firmware v2 for TL-WR941HP v1.

The HVPL may affect the wirless signal. Since we can't get far away from it, you may consider to add one extender.

Hey, you can hide SSID on the web UI of extender. After that, the wireless network is still working but it's invisible.

Since you changed the name of plug, try to add the device again on your alexa app. https://www.tp-link.com/us/faq-944.html Good luck..

Do you mean they can't work properly since you update the latest kasa app? I think it's better to check the issue with current version. What's the error you get? You may refer to the instruction to...