Roku express will not accept valid wifi password.

Brand new Roku Express. During setup, I found it will not accept the valid password for our home wifi. Checked carefully numerous times, restarted roku, restarted router, no joy at all.

I'm planning to return this, but thought I'd check to see if anyone has a solution. I've seen similar problems described on the internet, but no solutions that work for me. Thanks to anyone reading!