Accually i hade a simular issue with OBH after activating password/Parental config
After that only sftp worked over port 22.
Now i do some major work on my OBH image so usally its me screwing up my image
But after i tested a fresh OBH image in OMB activating parental control and setting password the regular ftp stops working
and only sftp over port 22 is allowed. But i guess this is to be excpected since regular ftp does not require a password