@jillmess
You use COPS on your kobo via a
browser on your kobo.
Where an e-book downloaded from COPS is placed on your kobo depends on the settings (or lack thereof) of your browser. COPS has no influence on this.
I do not think the browser on the KOBO has a setting to set where the download folder is. But I'm not 100% sure.
On the COPS side of things:
Are you using COPS from
https://github.com/mikespub-org/seblucas-cops ?
The old COPS (
https://github.com/seblucas/cops ) is deprecated/superseded/no longer maintained.