Issue connecting to a network

I have a dual band router with two networks on it, one is 5G and one is 2.4G. I want to switch to the 2.4G network because I can get faster internet indoors, but when I select the 2.4G network from my connections list it prompts a password, so I enter it. then it loads for a while then prompts the password again, this happens over and over in a loop and I can never connect to it. I have checked the password and I’m entering the right one so I don’t know how I can connect to it.

my Wlan chip is a Qualcomm atheros QCA9377

my router model is a TP Link AC1350 Archer C59

Try to restart the whole system.