SiteGround Staging – Jetpack Connection Woes

Hello! I’m trying to connect Jetpack to a staging website hosted on SiteGround. From what I understand, it is not possible to do so as it is listed as a known issue here:

https://jetpack.com/support/getting-started-with-jetpack/known-issues/

Is there any way around this? How would I be able to test compatibility without making the website live? I get the “an error has occurred. Please try again” and “jetpack requires your site to be publicly accessible”. I did find this code (https://github.com/Automattic/jetpack/issues/7835):

if (strpos(ABSPATH, ‘staging’) !== false) {
define( ‘JETPACK_STAGING_MODE’, true );
}

When I debug Jetpack after I add this code, it changes an error to “Your Jetpack setup looks a-okay!” but it still does not connect.

Am I grasping at straws to find a solution, or is there a way to setup Jetpack, even if it’s temporary to make sure the website’s e-commerce functionality will work. We are switching themes, designs, and e-commerce providers to woocommerce, so a test (as far as I know) is necessary before we make the staging website live. Thank you to any and all responses!