Spark problem login with é, à

Hi,

I have Spark 2.5.8 and OpenFire 3.6.4 on Windows 2008 R2 installed.

I have one user which has é in his user name. The problem is that this user is always **offline **in Spark list but he can send or receive message from other users. When I replaced é with regular **e **this problem was resolved. But from some conditions this usermust use é in its user name.

I tried to log on Spark, using user name which contain é, but it was unsuccessful. Always I get same message that user name or password is wrong.

Instead Spark I used Pandion and the login, using user name which contain é, was successfull.

Do you have any idea how to resolve this issue? Using Spark to login on OperFire using user name which contain characters with accents?

Thank you