Hi,
I recently installed my DIY start9 and wanted to install the monerod service but searching for it gives no results. I spotted it by accident as a optional service for BTCpay Server but clicking it show that its not found. Do I require something for this service?
Monero is a community maintained project and found on the Community Registry, along with many other services that might interest you. In your first screenshot you’ll see the button to change and add registries.