I had to look into it, because their pricing plans seem to have changed now. Evidently I have something called Proton Plus, $4.99 per month. It looks like that plans benefits do not extend to additional Proton Pass features.
I'm going to be transferring accounts away from Proton and then closing my accounts entirely. Already moved all my passwords back to Keepass. My main email address has been on posteo(.de), which has been great. Super reliable service from a company who appears to actually get the ethos of FOSS. I only pay, I think $12 per year for their service.