ERR_SSL_PROTOCOL_ERROR on Subdomains for Laravel Multi-tenant App (stancl/tenancy, Single DB) on Hostinger

I’ve deployed a multi-tenant Laravel application using the stancl/tenancy package. It’s configured with a single database and hosted on Hostinger’s hPanel business plan.

The application works perfectly fine on the central domain (e.g., maindomain.com). However, when I try to access any of the tenant subdomains (e.g., tenant1.maindomain.com, tenant2.maindomain.com), I encounter the ERR_SSL_PROTOCOL_ERROR in my browser.

Here’s a summary of my setup:

Laravel Version: (Specify your Laravel version here)
stancl/tenancy Version: (Specify your stancl/tenancy version here)
Database: Single database for all tenants.
Hosting: Hostinger hPanel business.
SSL: I have an SSL certificate installed for my main domain (and I believe it should cover subdomains).
Things I’ve already checked/tried:

Ensuring the central domain has a valid SSL certificate.
Checking the Hostinger SSL settings for the domain and subdomains.
Reviewing my Laravel and tenancy configuration files (though I’m not sure what to look for regarding SSL on subdomains).
Clearing browser cache and trying different browsers.
The fact that the central domain works correctly suggests the base SSL setup might be okay, but there seems to be an issue specifically with the subdomains.

Has anyone encountered this issue before with stancl/tenancy and Hostinger (or similar setups)? Any insights or troubleshooting steps would be greatly appreciated. I’m not sure where to look next to resolve this SSL error on my tenant subdomains.

Thank you in advance for your help!

Please remember to replace the placeholders for Laravel and stancl/tenancy versions with your actual versions. You might also want to include relevant snippets from your config/tenancy.php file if you think they might be related (be careful not to expose any sensitive information). Good luck!