macOS Catalina broke a lot of software and companies are just catching up with updaters for OSX users. Below are all the updates available at this point from Profoto. I tried to directly link to the downloads even though you need to login to see them, but they might work without logging in.
Air Remote TTL-F for Fujifilm, B1 500 AirTTL Unit, B1X 500 AirTTL Unit, and B2 250 AirTTL Unit
Released: 20 November 2019
Version: A4, E4, E4, A9
Release notes
Download Air Remote TTL-F Here
Download B1 500 AirTTL Here
Download B1X 500 AirTTL Here
Download B2 250 AirTTL Here
D2 1000 AirTTL Unit
Released: 20 November 2019
Version: B3
Release notes
Profoto Air Remote TTL-F: B&H Photo / Adorama
Profoto A1: B&H Photo / Adorama
Profoto B1 500 AirTTL Battery-Powered Flash: B&H Photo / Adorama
Profoto B1 500 Air Battery-Powered 2-Light Kit: B&H Photo / Adorama
Profoto B2 Off-Camera Flash Head: B&H Photo / Adorama
Profoto B2 250 Air TTL Location Kit: B&H Photo / Adorama
Profoto D2 Duo 1000/1000 AirTTL 2-Light Kit: B&H Photo / Adorama