Please accept our apology for the delayed response.
So you would want to remove the comma after Year and then you would need to use the | forced separation characters around the (Series Title Series Volume) section.
So it would be | (Series Title Series Volume)|
If this does not resolve the issue then:
Please contact Technical Support directly
1-800-336-4474 option 4 then 1 or
https://support.clarivate.com/Endnote/s/technicalsupport?language=en_US