www.wysiwygwebbuilder.com

I just downloaded version 16 in hope that the issues with Norwegian letters, æ ø å, had been solved.
But this problem, that suddenly occured for the first time (!) yesterday, (in version 15.4) is still there. In text area, I only get questinmarks. But if I use texy Art, everything is ok.

Just found out, I included a form, and that meant I had to change the page into .php. Now my question is: Why can't php-pages display norwegian letters correctly?

This is unrelated to the software. This is a configuration issue.
If it only happens with PHP pages then this is most likely related the server configuration, because PHP pages are produces on the server side.
If it also happens with standard HTML then make sure the character set is set to 'UTF-8'.

Okay, thanks, it worked!