Serves images with low resolution

Hey,

the plugin uses flags from here: https://famfamfam.com/lab/icons/flags/

You can define your own set if you have better flags. Read one here: https://msls.co/user-docs/plugin-configuration.html#advanced-settings

Thank you for your reply.
I tried to use other flags by uploading them to my website and then putting their links, but it didn’t work. It gives me the not found error icon.

You can probably check the link that the plugin builds (using your configuration) and adjust accordingly.