Sometimes, the Geo IP Redirect module might not show expected behavior during testing. This is due to the fact that certain VPN extensions don't work correctly for some countries. There are two available options for thorough testing:
1. IP addresses can be added for testing in vendor/amasty/geoipredirect/Plugin/Action.php
2. A specific IP address for testing can be set in Stores > Configuration → Amasty Extensions → Geo IP Data > Debug.