I found a few more bugs.
I'm using a 24h recording option and app and e-mail notification to motion detection. After motion detec camera stops recording for about one minute. There is no possibility to see what was the source of alert because e-mail notification doesn't work too (app notification still work).
These are fundamental things!!! Taking into account problem with switch between home/remote mode in motion detection NC450 camera is now completely useless!!!
Is there any possibility to go back to 1.3.4 firmware? On this soft every thing works fine.
Is the 1.4 firmware was even tested? How you can public such unfinished software?!

I am encountering the same problem with the NC450 going offline for no reason after the latest 1.4 FW update. I never had any problems with the earlier version and was perfectly happy with it. I am seriously regretting the update now. My cam is at a remote site and I can't possibly be going there every few hours to reboot the cam. I really hope there is a fix to this issue asap. Tried to downgrade the FW and it was not possible, totally frustrating. The least you could do is to allow us to be able to downgrade it to get it working again while you fix the bug. Hope something can be done soon else I will need to replace the cam with something else that is more stable.

The same happens to me. It is a shame that they upload a version that leaves the camera unusable. And above you can not install the previous version

Reinstall the tpCamera app helps for some issue.
Unfortunately camera still goes offline sometimes.
I noticed that during 24h recording (24h recording option on) camera regulary stops recording for a while (for few secound) and afther that pause camera can (very rarely) change the position.

I got in touch with the technical service and they helped me to reinstall the previous version 1.3.4 ... Now it goes well and I will not update until they correct the bug

I contact tplink and they told me how to downgrade the firmware. You guys can try it.

For temporary solution, please downgrade the firmware version to 1.3.4 and check if the problem will be resolved.
Please do the following steps to downgrade it:
1.Please download the middle firmware and upgrade it via web browser.
http://support.tp-link.com/f/d4a690790c/?dl=1

About How to upgrade firmware on NC series cameras, please click on the following link to get some help：
https://www.tp-link.com/en/faq-1972.html

2. Please download 1.3.4 firmware and upgrade it via web browser.
http://support.tp-link.com/f/25d8dbff69/?dl=1

Then reset camera and do the configuration again.
And then check if it will work properly.

Thanks man!
Looks like that after downgrade to 1.3.4 camera works fine.. finally

1.3.4 works perfectly!

fblt wrote

1.3.4 works perfectly!

i agree with you