Netgear router in AP mode constant purple light

Hi, I have installed my orbi rbr760 router and sattelite. I put the router in AP mode and connected it to my Odido router (with wifi turned off). I used lan4 from my Odido router to an Ethernet connection of my Orbi(router). I then linked the sattelite via another empty Ethernet port on the orbi(router).
All works fine; but the orbi(router) in AP mode kees turning a red purple light. Google says it doesn’t have internet? If I check the interface; it also says NO INTERNET. But, the wifi of orbi works just fine. I can connect to the wifi network, and have perfect reach all over the house and garden. What does this purple light mean?
Do I need to switch the cable from the router to the “internet port” of the orbi router??

I didn’t use the setup orbi App at all, because I set it up as AP and not as router. Is this mandatory?


With kind regards and thanks for the help.