In order to use Citrix, I followed the instruction in the URL: https://answers.uillinois.edu/illinois.engineering/page.php?id=81722. I selected '3_Tunnel All' when connecting the VPN. However, the connection failed, and I can no longer access the Internet through WiFi. It shows 'No Internet' in the network tab, and shows "DNS_PROBE_FINISHED_NO_INTERNET" for any webpage in Chrome. Is there any way to fix this?