Ping not working. Internet working in ubuntu

I use ubuntu 18.04. I cannot ping google.com from my ubuntu terminal nor make REST API calls from my Ruby On Rails console since a few months. The only relevant change I made on my laptop is to install ExpressVPN on my linux machine. Here are few things I tried.

1. ping google.com on ubuntu laptop with "Ethernet from router-1" - Not Working
2. ping google.com on ubuntu laptop with "WiFi from router -1" - Not working
3. ping google.com on ubuntu laptop with "Ethernet from router-1 + expressvpn connect" - Working
4. ping google.com on ubuntu laptop with "WiFi from router-1 + expressvpn connect" - Working
5. ping google.com on ubuntu laptop with "WiFi from mobile hotspot" - "Working
6. ping google.com on a different windows laptop with "WiFi from router-1" - Working

With the following experiments, I came to a conclusion that something changed in my laptop after installing expressvpn. I uninstalled expressvpn and tried, but no luck. In all cases when I do dig google.com or curl google.com, I get a response. Please let me know if there is anything I can do to fix this problem.

Here is my iptables without expressvpn

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy DROP)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

Chain DOCKER (0 references)
target     prot opt source               destination         

Chain DOCKER-ISOLATION-STAGE-1 (0 references)
target     prot opt source               destination         

Chain DOCKER-ISOLATION-STAGE-2 (0 references)
target     prot opt source               destination         

Chain DOCKER-USER (0 references)
target     prot opt source               destination  

Here is my iptables output with expressvpn

Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy DROP)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
xvpn       all  --  anywhere             anywhere            

Chain DOCKER (0 references)
target     prot opt source               destination         

Chain DOCKER-ISOLATION-STAGE-1 (0 references)
target     prot opt source               destination         

Chain DOCKER-ISOLATION-STAGE-2 (0 references)
target     prot opt source               destination         

Chain DOCKER-USER (0 references)
target     prot opt source               destination         

Chain xvpn (1 references)
target     prot opt source               destination         
xvpn_dns   all  --  anywhere             anywhere            
xvpn_ks    all  --  anywhere             anywhere            

Chain xvpn_dns (1 references)
target     prot opt source               destination         
xvpn_dns_iface_exceptions  all  --  anywhere             anywhere            
xvpn_dns_ip_exceptions  all  --  anywhere             anywhere            
DROP       udp  --  anywhere             anywhere             udp dpt:domain

Chain xvpn_dns_iface_exceptions (1 references)
target     prot opt source               destination         

Chain xvpn_dns_ip_exceptions (1 references)
target     prot opt source               destination         
ACCEPT     udp  --  anywhere             10.156.0.1           udp dpt:domain

Chain xvpn_ks (1 references)
target     prot opt source               destination         
xvpn_ks_iface_exceptions  all  --  anywhere             anywhere            
xvpn_ks_ip_exceptions  all  --  anywhere             anywhere            

Chain xvpn_ks_iface_exceptions (1 references)
target     prot opt source               destination         

Chain xvpn_ks_ip_exceptions (1 references)
target     prot opt source               destination