Installation only office desktop editors

Installation stage stops at install both on linux prompt and website install, link below. Receive error page message on website and error on linux prompt for installation.
Linux prompt was flatpak install flathub org.onlyoffice.desktopeditors
Website link was Install ONLYOFFICE Desktop Editors on Linux | Flathub
Followed all the steps for flathub installaton but error on final install

Here are my chromeos details and error messages

Hello @Josh007

As I can see latest screen starts with installation command. Please refer to this guide to find out how to add repository and install Desktop Editors via flatpack: