Context: 

Recently I had a change of my ISP.

Looking on my smartphone, the new WiFi signal now have an "2.4 GHz/5GHz" information.

First I connected my smartphone (to both ISP router and TL-WA850RE range extender), check. Then my personal Dell G3 laptop (to both ISP router and TL-WA850RE range extender), check. My work's laptop Dell Inspiron (to both ISP router and TL-WA850RE range extender), check. Now my Nintendo Switch (to both ISP router and TL-WA850RE range extender), check. Lastly, my PS4, not check.

The range extender signal doesn't even appears in the PS4 connection screen, why? I know that my PS4 (due it's not Pro/Slim) can only accepts 2.4 GHz connections, and that's ok, because the TL-WA850RE can only broadcast this signal, correct? So, there shouldn't be any problems to connect...

I already tried to do a Static IP, doesn't work. The SSID of my ISP router and my TL-WA850RE are not the same.

And if I try to insert in the Manual form the infos of my extender, I receive a message that it couldn't find the IP address.