No option to insert citation at Author(Date)

EndNote EndNote General
2

The issue sounds like the tab in Word has changed from the EndNote X9 tab to the EndNote tab which works with EndNote online which does not have the option to produce the Author(Year) format of a citation.

You should be able to use the following steps to switch the tab in Word back to the EndNote X9 tab.

https://support.clarivate.com/Endnote/s/article/EndNote-Seeing-EndNote-online-Web-tools-instead-of-EndNote?language=en_US