I had a problem last night, too. But not with pages loading slowly (some did, but not much worse than usual). I submitted my receipt within my report, as I always do, but it's a good thing I logged back in before I went to bed, to check my assignment status. Lo and behold--it said my receipt hadn't been submitted. I immediately re-submitted it, and it went through. I'm glad I checked.
I learn something new every day, but not everyday!
I've learned to never trust spell-check or my phone's auto-fill feature.