Freeradius 2.2.9 not works

[Mr Dini]

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!