@eddy__pp 

Okay that makes sense.  1st step to resolve this is make sure your bulbs are on the latest frimware.  From the main screen click on the 3-lines at the upper left corner, then click on settings and finally Firmware.  

Once the devices are on the latest firmware close the app and relaunch it and see if there has been a change.  

If the devices are already on the latest firmware tap on one of the bulbs.  Access its settings "upper right corner"  and you should see a Remote Control toggle.  This toggle only appears if your device is local only.  Turn on the remote control.  Once it is successful the toggle should vanish and your product should be on ready to use remotely.  

Another question is do you have any Kasa device that are working remotely or with Alexa?  If not and the steps above to do not help there actually may be an issue in your router that is not allowing the communication with our cloud server.  To rule that out you can try two things.  1.  take a device to another network and set it up there.  2.  set one of the devices to a reserved DHCP address and then put that address in your routers DMZ.  This will open all ports to the device and bypass any firewall settings that could possibly be interfering.  If either of these options work the issue would be in the router and likely with the firrwall. 

@Lynn1179 

Not really anything to fix.  Every situation is different.  Most of the issues with Smart plugs and their connection tend to be caused by the routers.  For instance a recent frimware update with the Linksys Velop system caused Smart plugs to not be able to connect to the network.  Users either had to create a 2.4GHz only Guest network or had to downgrade their router's frimware.  

If you have specfics for your issue please let us know and we can help issolate the cause

@Lynn1179 

Well lets start with what are you experiancing with this plug.  That will help us direct the troubelshooting steps. 

@Lynn1179 

If you are getting the local only message from time to time that indicates the plug is losing access to the cloud service, this would also be the reason why remote control and Alexa control fail, but you should still be able to control it locally.  If you are losing the ability to control it locally (from the Kasa app on the same wifi network) then the issue may very well be the device is losing connectivity to the network.  You could have it in an area with poor signal or there could be interference or conjection.  Have you tried to move the plug closer to your router?  Also, are you up to date on the firmware?