Box totally sucks. Rarely can I get past enumeration 1/3 without TI responding back with "network error". I can try 30 times in succession and I may get lucky. That's why they give 50GB free, because it's so bad no one will pay for it.
Open up Titanium, from the Menu > Preferences > Enable Box
Back out of Settings and go to Schedules - You should now see "Sync to Box" as an option. "Nothing is included (no label selected)"
Click Edit and set Remote Location and History Coverage
Click Elements to Synchronize > Choose Selected Labels and Click OK
Back out of Box General Settings back to Schedules and Click Backup/Restore (at the top)
Select "Click to edit filters" - at the bottom of the screen Check New Label and then click Edit
Change name to whatever you want - like "My Stuff" then click the Add/Remove Elements button.
Go down the list checking all the important stuff that you wish to upload to Box. You wont need all the apps checked only certain ones, I'm sure you can figure that out.
Also check all the crap in green.
Once you are done - Save the Selection - Save the Custom Name.
Back out of the Settings and go back to Schedule.
At Schedule > Click Edit > Click Elements to Synchronize > Check "My Stuff" or whatever you called it. > Click OK and back out to Schedules
Now under Sync to Box it should show your custom list.
Click Run - then you get the screen to Log into Box - click log in - enter your un/pw - check keep me logged in then the login button
Then finally, after all that fun, it starts syncing to box.
Once you have made it this far, you can go back and schedule that crap the way you want to.