You need to phone the techs at ipage and have them increase the php to 5.3.2 and the mySQL to 5.1.13. The server cannot read the moodle code, so it does not let you login. If they cannot do it, you need to get a different host. I suggest Host Gator. I had to switch because of the same problem and everything works nicely now and it can handle 7 blocks of 30 chemistry students.