As long as you don’t have any redirects going from the custom domain to the free subdomain, it won’t be blocked (Unless the block is actually because of something on your site and not the noisy neighbor effect, then it will get blocked again).
As long as you don’t have any redirects going from the custom domain to the free subdomain, it won’t be blocked (Unless the block is actually because of something on your site and not the noisy neighbor effect, then it will get blocked again).