Thanks for submitting your PlugDebug output. From this I can see that the adapter is connected and detected normally, and that the driver seems to be loaded normally as well. This would suggest that something with the system or network is at issue.
Can you share some details about the network and specific ethernet cable you’re connecting to? Have you tried other devices on the same ethernet cable to verify that they are able to connect normally?
My gut instinct is that this is a networking problem, not something wrong with your system or the adapter- however since you mentioned trying to reinstall the adapter, I’m not sure if this might have changed since you generated the PlugDebug output.
Please let me know if you’ve had success connecting other networking devices to this same ethernet connection- and if not, could you please share some details about whether this is a home or work network?