@Kasper19 

Hi,
You can refer to the link below to troubleshoot the reported case.
What to do if I can't control my Tapo cameras on the Tapo app?
 

If the problem remains, please help confirm the following information.
1. Describe your network diagram, such as ISP--wireless router ))) ((( Tapo camera. 
What's the model number of your router? Please confirm if you have internet when connecting to the router's Wi-Fi.

2. Send me the MAC address of your camera via a private message(@Solla-topee).

3. The LED status on the camera.

Best Regards