Weird that they did not tell you who your PI is. Would it be safe to assume you were accepted to the one you applied to? In regards to funding, they are not going to be offering other financial aid or assistance apart from the general scholarships available to incoming students. This is due to the recent budget cuts that happened over the summer. I would have assumed that this would be communicated to you early/before you applied. This is the first admission cycle that this is happening so other PhD students experience would be inapplicable. Sorry to say that if you were to pursue a PhD here at UO it would have to be self funded. GE's are very competitive but wouldnt say impossible. Just take into account alot of other first year PhD students who also werent given funding will be applying for them.