Freeradius 2.2.9 not works

Hi! I compiled the freeradius 2.2.9 on my nas and I configured a MySQL database for radius. It seems like works, but if I make a test connection from my router, it sends an Access-Reject package... If I make a radtest it also sends Access-Reject package, but if I edit the Cleartext-Password := guest1234 to Password == guest1234 it sends Access-Accept package... Why? What's wrong? Thanks for your answer!