I can't connect to my TP-Link router on android if I use a password. It doesn't even try to connect(just says 'saved') as if the password is incorrect, of which I am certain it isn't.

However, I can connect with an 'open' network' which as you might know isn't ideal to say the least.

I have updated my firmware to the latest version, and I have android 9 installed on my phone (which is the most recent one supported).

I have tried turning off OFDMA and Smart Connect, but to no avail.

If anyone can suggest something I can try, feel free to leave a reply.