@Protos911 Yeah, I'm going to do this. I'll plan to stop using it and send to repair. Strange is that only me had this problem. But thanks who tried to help. I'll try to post a feedback after the...

@Protos911 I tried this. Didn't work. Same behavior.

Anyone else has a hint? My device still has warranty. Should I send it back?

@Yannie I already did this. Used even a different laptop. Tried on Omada and on Standlone. Didn't work.

@Protos911 I did it all and didnt work. It might be a problem with my device.

I'm having problems updating the firmware. Anyone else had? I explained it here https://community.tp-link.com/en/business/forum/topic/276394