website is only accessible from my own pc

Dear all
I am using DA for quiet a while on a vps server
i bought the server online so i dont have access to hardware
recently i realize the website is not accessible from any other device than those connected to my own wireless network
I checked the ip table and i did not block any ips
it is very strange
as i said the website is hosted on vps server in USA and i live in UK so this can not be internal problem as it is not locally hosted
I even went to some friends house tried different devices but problem still there
Safari,chrome,firefox all says server is not found
but as soon as i am backed home tried from home every thing is perfect
how can i fix this issue
Kind regards

Hello,

I don't see any issue when checking the site availability here: http://host-tracker.com/check_res_ajx/12517708-0/

SOA errors

Hı and ty for reply
when i go here i see lots of errors
Also ı checked and seems i have SOA problem

Again i tried and website is only loading from my home
Could you open the page

1. You're missing full stops (dots) in NS lines of your DNS zone

ns2.salamgb.com.
ns1.salamgb.com.

You should add them.

2. You've got both NS servers hosted on one IP.

You should use nameservers in different subnets