How do I change the "notes" field at device summary page?

I use an Raspberry Pi, connected to balena cloud.

When I go to my device summary page in balena cloud - where the status, uuid, type and all that is stated - there is a field “Notes”.

I would like to change what that note says. But I haven’t been able to find anything about how to do that.

You should be able to click on Add device notes... and a cursor will appear, after which you should be able to type your notes.

So basically you simply click the field and start typing what you want

yes, exactly, its a simple text field that you can type in and is saved automatically in the background. Is this not working for you?