I see that you can only create an account on your computer (I use a Mac). I will soon take a look at how I can back it up (in addition to my usual time machine stuff).
Is there an option to create an online account that we could trust?
You may create a local account and sync via iCloud. But NNW also supports six online services, and self-hosted FreshRSS. The latter is probably what best answers your question.
Is there an option to create an online account that we could trust?