Help! Appreciate suggestions for fast no-code site for signups under my domain (after Squarespace tech & support fail)

Hello fellow Indie Hackers,

In a world of pain as Squarespace’s WYSIWYG editor isn’t working on my account and their tech support and customer support has been a nightmare. Troubleshooted everything and it’s a bug on their end. So I need a quick Plan B...

Need to get up a no-code site to connect with my domain + a landing page that allows for signups on my domain. Any suggestions?

My initial thought is to create a Google Site and connect it to a Mailchimp form. But if you have any better ideas, I’m all ears…. I don’t like using Google Forms directly because it adds a “!” graphic symbol warning at the end of the form that looks sketchy.

Thanks and for what it’s worth… if you have a deadline I’ve found Squarespace tech support and customer service to be utterly useless, unreliable and slow. And the service ain’t cheap either… I chose them for a quick and easy solution and it has been a disaster!