Account suspended just after adding domain

Hello !

Am a freelance developer, i created an app for a client and deployed it here.
Just after adding the domain name the site was suspended and i have no idea why.

The domain is =>
It is because the SSL was missing ? If that the case am buying one right now form my host.
I need the site back please.

This is my personal account.

Thank you

This is probably answered here: The requested URL / was not found on this server. That’s all we know