I'm seeing a couple of folks saying they were shorted sleeves. That is most likely not the case and is just a situation of using the wrong sleeves for the wrong cards. This happened with the original campaign as well, and honestly we probably should have added something to the label to clarify.

The Covenant sleeves pack contains:

11 small, printed sleeves: These are for the Astromancers spells/invocations (and includes 1 extra)
21 small, clear sleeves: 8 blessing cards and 12 corruptions (1 extra)
21 large, printed sleeves: 20 treasure cards (1 extra)
9 large, clear sleeves: 8 monument cards (1 extra)

If you are indeed missing sleeves, you can always request replacements through Quartermaster Logistics contact page.