mobile

Running a stock pre-rooted rom with locked bootloader. And have a problem with exchange. I have added an exchange account but it doesn't pull my calendar, and i'm often told that exchange services have stopped working. If i go into accounts and do a manual update, it sometimes stops duo to " exchange services have[...]" and sometimes it updates fine. But when i open google cal there's no exchange info..
This worked in kitkat, but since the L updates i've not been able to get it to work.

Any suggestions ?