X9.1.1 cannot add reference type in edit style>Footnote section>templates

EndNote EndNote Styles, Filters, and Connections
4

call their support!  I don’t have that version update, so can’t confirm.  

1-800-336-4474 option 4 then 1 or

https://support.clarivate.com/Endnote/s/technicalsupport?language=en_US