Hi,

I´m a new user from germany and I love piwigo, but I have a litte Problem with german umlaut marks in domain name and email addresses.

The register email for new users show the link like this:
http://www.xn--osnabrck-6ob.de/
but in german, it must be:
http://www.osnabrück.de

And:
I can´t save the webmaster email address, because of warning about incorrect mail address.


Piwigo version: newest 2.9.1
PHP version: 7.0.13
MySQL version: 5