Insert Stock Images in Office 365 only works on one of machines (MAC'S)

Hi

We are running Office 365 on Mac's and we are testing on 3 machines right now.

On one machine we can go to insert-Picture-Stock Images and it works and on 2 other machines, it does not give this option under the Insert Picture menu.

The one that works is running the new OSX - Big Sur in a Beta installation and the 2 others that are not working is running macOS Catalina 14.0.

We have tried to re-install the ones that do not work and they are running (all 3) on the same account) - Same issue all the time.

Anyone that can solve the mystery?

Thanks in advance

Thomas