Thats the designed behaviour, because expose your instance at public network and welcome anyone to open anything might quickly exhaust your poor oauth tokens’ use credits, which are just around 100 API requests per 10 mins.

So there is a main switch called “Disable upstream requests”, let that cloud svg besides searchbox to be grey and save your credits for NP archiving.

Anyway, if you host your own instance at homelab and turn that switch off, every sub is normal and free to browse.