Full Board URL: http://board.nr1a.com
XMB Version: 1.0

Good morning, dear friends of XMB!
Since 6. Sep. 2018 are German and Spanish letters in my forum no more published. XMB Version 1.0
In January 2017 I have installed the German and Spanish language.php and until 6. Sep. 2018 were the letters correct published.
If I will set the language on German or Spanish, the forum will show me correctly the forum in German or Spanish.
But if I try to publish a comment with German or Spanish letters üöä ñ, it is not allowed. I will get there the error:
""You have not entered a subject and message. Please go back and do so.""
What could happen on the 6. Sep. 2018 with my forum? http://board.nr1a.com
How will I get the letters again?
Thanks for your help!

XMB Version 1.0?

What could happen on the 6. Sep. 2018 with your webhost is the real question as this site doesn't push updates out.
At a guess, I think it's possible your webhost upgraded php but you would need to ask them and which version.