I have a TP-LINK RE205 AC750 Wifi Range Extender and use it as access point for my internet. Now all the devices are running well, except for 1 macbook air. It is a model 2013 and as macOS version 10.9.5 . The TP-LINK is running the newest version firmware. The problem it is having is that does not make connection with the TP-LINK and constaintly is saying that the password is incorrect. Every once in a while it does make connection, but only for a short amount of time.
I have tried all kinds of things, but nothing seems to work. It is becoming quite frustating. Do you have a solution?