Unable to run Jellyfin add-on in CoreElec with am6b+

Hello! I recently got the uGoos Am6b+ to run Jellyfin in my house. I installed CoreELec with this guide, downloaded the Jellyfi repositories/add-ons onto the device through coreelec; however, I'm not displayed the option to run the add-on at all. Am I doing something wrong? Am I supposed to just connect directly to the server itself? I also installed docker and the linux docker add-on too.