Confused by sharing button - can't share to Facebook?

Hi,

The other day I was going through some photos on the new Photos app (watermarking, which now takes DAYS). I finally have the album complete that I'd like to upload to Facebook but now when I click on the sharing button it only gives me the "iCloud Photo Sharing" option. I could have sworn a few days ago that Facebook, Twitter, etc. were also choices when I clicked that sharing button. I do have these things checked off in system preferences so they should be showing up. Now I'm going to have to upload 202 pics manually to FB?? Does anyone know what happened or know how to fix this? Thanks!