Can't get WAM1500 Samsung speaker to connect to smartthings

I had it connected then changed my WIFI and now It wont connect. I deleted it from my things and now it won’t find it anymore to add it. I can connect to It using the Samsung Multiroom speakers app but not with smartthings. What gives???

I also can’t get my new Shape M7 to connect, anyone else have a problem?
I already have one of my M7’s paired, but that was done months ago.

Was anyone able to figure this out. I deleted my R5 from my ST. When I went to go integrated it ST can’t find it. Any suggestion?