Moved to a new office

Installed Sonos controller on the pc, signed into the account and it can see the devices:

Era 100: Office (R)
Serial Number: 80-4A-F2-C1-F3-EA:B
Sonos OS: S2
Version: 16.4.2 (build 81158074)
Hardware Version: 1.38.1.10-2.1
Series ID: A102
IP Address: 192.168.50.83
WM: 1
---------------------------------
Era 100: Office (L)
Serial Number: C4-38-75-EE-CE-26:4
Sonos OS: S2
Version: 16.4.2 (build 81158074)
Hardware Version: 1.38.1.10-2.1
Series ID: A102
IP Address: 192.168.50.81
WM: 1
---------------------------------
Era 100: Unnamed Room
Serial Number: C4-38-75-EE-E2-2C:D
Sonos OS: S2
Version: 16.4.2 (build 81158074)
Hardware Version: 1.38.1.10-2.1
Series ID: A102
IP Address: 192.168.50.82
WM: 0

Controller see’s nothing, IP scan can detect the sonos devices,

Uninstalled and reinstalled app

Firewall is a Fortigate

Has anyone experienced this issue before?