Geoblocking is defined on a set of rules that allow you to allow or block based on the specified country. By default, the rules are defined so that all countries are allowed on the global level.
Steps-
1. Login with admin id on spam titan.
2.click on filter rule------>geoblocking as shown in below image.
3. If geoblocking is off enable it by clicking on enable button.
4.Once geoblocking is on you can click on add option to add the countries you wish to block. also you can click on ? to know more info.
