Needs Support in Setting Website

[Samusagroup]

Hello Infinity Free Support,

My website URL is: samusagroup.com or www(dot)samusagroup(dot)com

1. I bought the domain name from godaddy.com
2. I set up the DNS name servers to ns1 epizy com and ns2 epizy com
3. I created an account with Infinity Free, go to control panel, setup domain name.

What I am seeing currently is either: forbidden 403 or HTTP error 500
(it wasn’t like this initially, it was showing infinity free default page, but as I failed in creating in web builder, the site showing either forbidden 403, deleting and setting up the domain now gives me HTTP error 500)
4. I tried to look up in the forum for a solution or an answer.
5. But since I am a newbie in website creating, I failed to set it up properly.
6. I checked with dnschecker(dot)org that the A and NS works, does this help?

I want to create a website with your drag and drop feature and not using WordPress, as this is a simple website required only for me to display my contact and address. Please help.

[Ergastolator1]

The SiteBuilder is buggy and the pages require PHP 5.6 to be set.

[Samusagroup]

Ergastolator1, thank you so much for the help. I thought it was something wrong in my setting.