Can't Access Cpanel after migrating to Shopify

I’ve been trying to resolve this issue for the better part of two days now to no avail. But whenever I do try to login to my Cpanel my browser would display the error code : "

“421 Misdirected Request” or “403 Forbidden”

I’ve read somewhere that i’ve got to clear my cache and cookies which I did but still seem to have the issue. This happens on both my Chrome and Safari Browsers. I don’t know what seems to be the issue but it seems that it has to do with “cloudflare” which I did not get my domain from. I’m really at a loss now as I’ve got some settings that I have to change with my emails for the organization and I can’t get access. It’s my first foray on the ecommerce platform and I may have overlooked some of the settings when migrating into shopify.