Never use steam to validate yours files. If you need to do that for some reason choose the repair option from the ESO launcher.
Steam has an older version of ESO, so it saw your files were different than theirs and gave you theirs. Theirs were old... So now you're downloading patches since whenever their version is from.
Not sure if you really have a pts issue though if it wouldn't let you into live either. Try pts again when you can successfully log into live.