Google Cloud Print was deactivated by Google at the end of 2020. The Google servers now return error 410.
The replacement for Google Cloud Printing is the WePrint Print Remotely solution. View

The WePrint Print Remotely service provides many more features than GCP and can be set up in less than a minute.

WePrint can allow you to print remotely anywhere in the world via mobile data or WiFi.

https://mobile.eurosmartz.com/help.html#remotePrint