i can't connect or ping my droplet Public IP.

I have same problem. It just happened suddenly after well working.

I had a similar issue. Turns out you have to enable ICMP for your Inbound Rules on your Droplet’s Networking page.

Hi there,

Connect to the server via the console from your droplet dashboard, then try to disable UFW or run the command below to flush the firewall rules:

iptables -F

Hello,

I’m guessing the UFW firewall is enabled and is blocking the request. Could you please try adding this rule?

ufw allow from YOUR_IP_ADDRESS
ufw disable
ufw enable

You can get your networks IP address by clicking this link. https://www.google.com/search?q=current+IP+address&ie=utf-8&oe=utf-8

Hope it helps, thanks.