Country detection not working after Siteground cache is turned on

Your plugin works BEFORE the Siteground cache (SG optimizer) is turned on.

Siteground cache is very common and Siteground recommends their own cache as it works well for their hosting. They are not able to exclude certain cookies. But they can exclude specific URLs.

Currently, the site is using session.

Could you help to verify if your plugin works with SG optimizer?