Do we HAVE to upgrade to the Pro Level membership in order for Res to work properly? Just want to make sure Res doesn't act weird.

I looked through the checklist regarding features of the system and I didn't see where I would still be able to submit expenses if I went back to the premium membership. My pro level trial expires in 2 days, then I go back to the premium until Feb when that expires. I am gonna let the trial expire and see what my current level lets me do and then decide. I really do not want to throw another $300 on top of the $300 I already have to pay in Feb. I just love all the $$$ that it takes to run an reo biz. Plus, I just got my board dues bill - up to $700 for the year - choke - get out the checkbook and just hope that the cash fairy shows up.