There is an issue present in current version of Advanced Keylogger. We are working on its fix right now.
Actually most of Eltima products are shareware. It means that you can download the free trial for evaluation and if you like the product order the license. I.e. you can try before you buy.
The accents issue in Advanced Keylogger is easily derived from its free trial version.
In case you have already purchased Advanced keylogger and encountered the described issue, we are glad to offer you the upgrade to Powered Keylogger, which doesn't have any issues with special characters, for the price difference between PK and AK.
Powered Keylogger free trial can be downloaded from:
http://www.eltima.com/download/powered-keylogger/
Powered Keylogger original price can be derived from:
http://www.eltima.com/purchase/powered-keylogger/