Fix Laravel Wildcard Subdomain on Shared Hosting

I'm having issues with the DNS configuration for my Laravel application hosted on a shared server. It involves a dynamic subdomain that is supposed to route through a wildcard subdomain (*). I need a very experienced Laravel developer who can:

- Diagnose the DNS configuration issues
- Implement necessary fixes to ensure correct routing of subdomains
- Test and confirm that the dynamic subdomain is functioning properly

Ideal candidates should have:
- Extensive experience with Laravel and its middleware
- Strong knowledge in DNS configuration
- Previous experience working with shared hosting environments