Hello,

I have a raspberry pi with a license installed, but Codesys stops after 2 hours, and when I start it manually I have the following message:
pszInfo=!!!! no runtime license - running in demo mode(~2 hours)

I tried using License Manager, and got the following message:
Licensing info not available. There is no dongle attached to the device.
I have this message frequently, and usually removing the content of /var/opt/codesys/.cmact_license makes it work.

After doing it and restarting Codesys, I have an empty Softcontainer without my License.
I tried using "Install license" using the .WibuCmRau file for the corresponding license and got the following message:
Licensing info not available. The device does not support this service.
I also tried using Additional Functions > Restore Licenses with the Ticket ID and got the following message:
This device does not support automatic license backup.

How can I reinstall the license to this Raspberry Pi?

To simplify your problem you shall not select dongle and get dongle errors. Do as shown
In some cases you need 2 different licenses depending on the metrics.
And yes the system gives not always give proper error messages when you try to reinstall a license