Hello! I already familiar with WordPress Country Selector plugin, I can remake your popup perfectly and can meet all your requirements with pleasure.
I'm a web developer and good designer who has 8 experienced years in Graphic design, Website design, HTML, CSS, JAVASCRIPT, PHP, Wordpress/woocommerce, Shopify, Bigcommerce.
I am here for you with those skills and I assure you that I can do your work properly as per your requirements. Kindly initiate the chat so that we can discuss it further.
Thanks!
Regards,
Nhien