Am I the only one that is having trouble connecting my mobile device to the Phantom 3 4K remote? It says to connect it to the USB slot but there isn't one, only one for a micro usb. Should I get an adapter? Please help!

Yes, either that or better still, a cable with a Micro USB connector at one end and a normal one at the other.

I don't use a cable between my phone and my P3 4k
You use the Phantom's wifi network Phantom3_0964bb

Please connect your mobile device to your 4K RC's wifi. You'll find an SSID beginning with Phantom in your mobile devices' wifi detecting list when your RC is on. The micro usb port on the RC is only a reserved port.

How can I reset the wifi password? I can see the P3 4k (in my wifi) but can't connect with password. 1,2,3,4 does not work.