Just to make sure I understood correctly, you are building your plist according to this example, and in the Value
fields you don't use a numerical value (like the example) but instead put the text of the county name. Since the Prestashop Address Line 2 is free-text, this works out and fills-in the name that you put in the Value
.
If there isn't a full match to the user's current address, the expected behavior is either to leave this field empty or use the first selection value from the list. Not sure which is it, I suggest you test it out :) It's shouldn't be that hard to simulate, create a user in Prestashop through the website or the website backoffice and set a random value to Address Line 2. Then login using this user in the app. Another idea is to create a user in the app, and then using the website backoffice edit his address and change Address Line 2 to some random value, and then login once again through the app.
In any case, between login and re-login, it's best to restart your app (or the Visualizer), to make sure cookies are deleted and you're logged out.