As per the GeoIP Configuration and GeoIP Rules, your webstore will redirect the visitors accordingly.
When your customers will visit the webstore, they will get the popup if you have enabled the Prompt user to ask for switching store option.
By pressing Redirect button, they will be redirected to the webstore which is managed in the GeoIP Rules.
But if the customer Cancelled the popup, they would stay on the default store only, but they can select the store view manually.
Once your customer clicks on Redirect, they will be redirected to that country’s specific store. As per above screenshot, the customer will be redirected to the German store and the currency will be displayed i.e. Euro in the product rates.
If the visiting customer’s county is blocked, the customer will get the popup message as you set or ask to navigate to specific page.
If you have enabled the Magento “Manual Store Switcher” and “Manual Currency Switcher” from GeoIP Configuration, the customer can manually select the store or/and currency.