Most likely, your IP was blocked.
To resolve it, Open a ticket with your Primary IP
Address and We can UNBLOCK it & White list it.
Why IPs get blocked?
> When you are on backend of your website trying to
Add some codes, make some changes. Server MIGHT think, you are
not authorized to do it & will block your IP.
Once White listed, you will never get blocked.
System RARELY blocks VISITORS unless they try to
do funny things to inspect your website or poke around.