The problem seems to be that Protonmail is flagging 2.3.0-1 as out of date (via the app -- at least on my machine -- https://postimg.cc/ZWqXV3MC), despite: (1) GitHub stating that it is the latest version (https://github.com/ProtonMail/proton-bridge); and (2) the ProtonMail Bridge download for Linux providing 2.3.0-1 (https://proton.me/mail/bridge#download).
Not much can be done from the AUR package maintainer's perspective. It is officially up to date -- though the app reports otherwise.
Pinned Comments
bthompson commented on 2021-06-17 04:13 (UTC)
Just having pass installed with a key set up wasn't enough for me, I had to follow this: https://pychao.com/2020/06/10/update-on-using-protonmail-bridge-on-headless-wordpress-linux-servers/
ali.molaei commented on 2020-04-16 07:52 (UTC) (edited on 2020-04-16 18:32 (UTC) by ali.molaei)
This package is now being built from source. if you want the binary version, use protonmail-bridge-bin package