Publish a website on a custom domain

My client has a website but he wanted to revamp his site. So I redesigned the site on a sub-domain and now I want to publish his website on the main (existing domain). Although my client has a subscription plan, but Webflow is asking for an additional $468 / year + tax. Can you please help me solve this problem?

I am attaching the error screenshots my client is facing while publishing.

This needs to be handled by Webflow support. We (the community) can’t assist.

Ohh okay! Thanks for letting me know, Jeff.