Try restarting the router
I called Samsung support.
We tried several trouble shooting steps, including wiping cache partitions.
That didn't work.
Finally they told me to call my ISP and tell them to "refresh my network".
I didn't do that, as it seemed that if other devices could connect to my network, the problem wasn't with the ISP.
I then tried restarting the router.
That worked. Thank you very much! Saved me from more anxiety, especially heading into a long weekend.
It seems like whenever there's a long weekend, I always have some kind of problem. There's been 2 long weekends in recent years where I had to deal with pop up viruses.
Another year where I had a microSD card, that seemed like it wasn't able to write more than a few GBs. After a lot of trouble shooting, I realized I bought a fake card.
This was looking like it was going to be another one of those times when I'd have to divert my attention into some unexpected problem. But thanks to you, it's fixed.