hy,
thank you for your help! the php function idn_to_utf8() was there for testing automatic conversion of the IDN-domains. it exists since php 5.3.0 so it looks like you have an older version on your server.
but as it is not needed, because the automatic conversion is not yet implemented, i removed it in version 0.1.1 which was just released and should be visible in your updates soon. you can also make a manual update right now.
if the function returns in a future version i will check for compatibility so that you don’t run into troubles again with an older php version, although i can only recommend you to update it on your server for security reasons. there are many site out there to tell you how ??
i hope we could solve your issue and would be happy about feedback!
matt