Limited number of devices allowed.

[Montani29]

In my home, I have been using an EX2700/N300 WiFi Range Extender with great success.  Recently though I've been having minor connectivity issues.  This morning, I received a message that "only one device can be connected at a time." and "all other devices will be logged off."  This is a first and renders the extender virtually useless, given the fact that I have 4 connected devices.

[DarrenM]

Have you tried to power cycle the unit? If so you can always do a factory reset of the unit and set it up again see if that resolves the issue.

DarrenM