If Online Documentation/Help page no longer works/load as per the initial check whether the system parameters showing the correct values.

For online documentation, This should be something like https://ifspsc1-d04.demo.ifs.cloud/ifsdoc/documentation/en/

Please refer to the below documentation and fix the URL, restart servers and clear the browser cache, and check whether the issue will be solved.

https://docs.ifs.com/techdocs/Foundation1/040_administration/420_documentation/020_configuration/default.htm

Also refer the following;
 

Docs.ifs.com would be a workaround that is publicly available for IFSAPP10 and IFS Cloud.