Homekit iCloud+ subscription license versus number of cameras

I have an iCloud+ subscription that allows me to record secure videos for 6 homekit cameras, and i do indeed have 6 cameras connected.

5 of them are configured to record video (and works fine), but when i switch it on for number 6, this message appears:

So it says i can add up to 6 cameras, which i have, but when wanting to record on number 6, i wont let me.

Has anyone seen this before?

It used to work fine for a long time, but after removing and adding back the same camera, this started to happen. Almost as if the deletion didn't go well, and got stuck somehow?