Can see topics, but can't echo

[PatricioGC]

How are you connecting to your Create 3?

USB Ethernet (ROS 2)

Computer(s) Model(s) and Operating System(s)

Intel NUC/ Ubuntu 20.04

Which version of ROS 2 is installed on your computer?

Galactic

Which firmware version is installed on your robot?

G.5.4

Which RMW is your robot running?

FastRTPS

Does your robot have an assigned namespace? If so, please share.

/ondra

Is the robot connected to a network? If so, what is the network type?

Yes, university network

Are there multiple Create 3 robots connected to your network?

No

Is multicast enabled?

None

What is the Adapter Board's USB/BLE Toggle currently switched to?

USB

Describe your question.

I can list the various topics from the base, and i can send a message to the /cmd_vel topic, but i can't echo any information from the rest.