So I followed this guide in setting up my personal vpn on the same droplet which contained my website.
Now the vpn works but my website doesn't work anymore.
I tried enabling ufw again but still doesn't work.
I used this guide/tut: https://www.digitalocean.com/community/tutorials/how-to-set-up-an-ikev2-vpn-server-with-strongswan-on-ubuntu-16-04#step-4-—-configuring-strongswan
Everything's working fine now. I have fixed it....