Hi,
Yes, the migration from the previous server must have messed with the encoding / charset of that text.
You can try following what is written here:
nicj.net/mysql-converting-an-incorrect-latin1-column-to-utf8/
However, that's quite complex to do and you'll be spending hours looking into it. And maybe it will not be possible to convert the text back to proper UTF8.
A simple solution would be to empty the table hikashop_zone via your PHPMyAdmin and then install the HikaShop install package. This will add back all the default zones.
Note however that if you created extra zones, you'll loose them when you empty the table, so you'll have to add them back, with the sub zones listing and then reconfigure the areas where you selected them (the "main tax zone" of the HikaShop configuration, the "zone" restriction of taxes, shipping methods, payment methods, coupons, etc).
A better way would be to export first the zones that you added (with the export tool in PHPMyAdmin), empty the table, install HikaShop and then import back the exported zones so that you can get them back with the exact same namekey.
I would recommend you try that on a copy of the website before doing it on a live website to avoid breaking things.