Recently, when I want to configure my hub 3.0 for port forwarding etc, I get this when I try to log in. No one is logged in, I even made sure to log out of my last session, but it still does this:
Someone else is currently logged into the settings page. Only one session at a time is allowed. Please try again later."
I've had to reboot my hub 3.0 with the pin button to fix this, only for it to come back when I try to log in the second time, unplugging the hub 3.0 from power doesn't make a difference (I had it disconnected for 10/15 minutes and it still didn't work afterwards).
Do you have the VM Connect app open at the same time on another device?
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I’ve had this, a power cycle of the hub fixed it for me.
This is a major pain in the butt. Both the connect app and the router via Chrome say the same thing. Even using MS Edge says the same thing.
Someone else is currently logged into the settings page. Only one session at a time is allowed. Please try again later.
There is nobody else logged in. There is a bug here, or a cookie issue here, clearing caches and data doesn't help either.
That is the reason it is best to ditch the app and use the Hub GUI in a browser.
I bet it is a lot quicker than a factory reset !!