@Solla-topee I faced the same problem.Are you trying to figure out what the reason is?

  @Maxim_  I've "tested" 2 beta firmware versions and after all this time they decided to replace my camera with a new one.

Now, I'm thinking to update my second camera from 1.05 to the latest firmware... just to prove that itcs the firmware and not the camera... but I think I do not have the necessary energy to go through the same stept again to get that one replaced as well..

I guess we will never make them admit there is a problem with the latest firmware or the device

  @Mihai_S my case is becoming weirder, the LED status is blinking red (which indicates the camera is connecting to the network) blinks for all day, but I still can access the cam both local and remote. I've replaced the C220 position with the C212 (Wi-Fi setup), the C212 LED also blinking red but it doesn't go offline.
There might be some problem with the camera itself, I tried to change the router but with no success, still offline after 3-4 days working.
But...
I've set static IP by DHCP Binding on my router, still waiting for the result if it is going to be offline anymore, it has been working well for 3 days since I set the static IP. Gonna wait for at least 2 weeks!
If will reply if there is any update.

Have a nice day.

We need a way to downgrade firmware.

1.1.4

1.1.6

Both version has the same issue.

  @Solla-topee 

I also have the same issues with both my Tapo C220 Camera, I have a 6 camera setup at my home 2 C320WS, 2 C210 and 2 C220. Only the C220's have this weird problem while the others are working like a charm. i have to manually reset them or disconnect them from power supply and connect back to get it work again. This is completely frustrating as i was not able to use the camera at some critical times where it is needed. 

Network:

• All of the 6 cameras are directly connected to WiFi (2.4Ghz). No obstacles in between router and cameras.
• Camera Versions (Both Cameras): HW Ver - v1.0, Firmware Version - 1.1.6 Build 231208 Rel 66881n

From the review on both amazon, tplink community and others, i can clearly understand that this is a common problem with this version where almost all the users are facing. Kindly provide a solution to this.
 

Guys sadly the C220 still goes offline even when static IP is configured on the router 
- The engineer of TP-Link pushed to my C220 a downgrade firmware, but it is the 1.1.4 not the 1.0.10 or lower that I expected. Still waiting for their advice or another older firmware.
- I did contact with my local TP-Link store, they said I would try to remove the microSD card and wait if the problem occurs again, but still the same result of going offline after 2 days. 
- I replaced the position of the C220 with the C212 (Wi-Fi setup) but reversely the C212 works perfectly without any connection issues. (tested for 2 weeks)
- I also connect the camera to another router with different Network Provider (Viettel, the previous was VNPT) as it is common that VNPT router usually blocks IP camera in Vietnam. But the camera still going offline after 1 or 2 days.
The LED status still showing green if the camera is offline!

In-app picture:

The app states the camera is offline, I tried to refresh, close and re-open the app but still get the same result.

1.0.5 and 1.0.10 are the most stable C220 firmware.
@Solla-topee Please let me know if there is still a solution to this! Thanks!

  @Solla-topee they just pushed to my C220 a new beta firmware, I'm surprised that they can make 2 firmwares in just a day!
I will reply in the ticket and here to let other users know if the issue is solved or not.
Big thanks for you who open the ticket to assist me and for the TP-Link engineer!