Hi @lukass2000, Not sure if it will help any, but you can up-vote this: https://community.tp-link.com/en/business/threads/topic/828620

Hi @ErikF, I guess it's recommended because there's nothing you can do and it appears that End of Life devices will likely stop being supported in a future controller update. TP Link added an article...

Hi @joemanderson01, agree with what @MR.S said but I think your link speed needs to be 5Gbps. If that's not an option you can try Auto.

Hi @ivmreg, any chance you have a duplicate IP?

Hi @lukass2000, As others noted, the 660HD would be better than the 650, but IMO it's not worth paying more than double to get it especially if you won't have the 2.5GB uplink. Most devices don't...

@Clarocque, it could be a browser issue. Try incognito mode or a different browser. If you're running any anti-virus software you may also try temporarily disabling it.