Hub Missing after upgrade

I have not used Smartthings in a while & have done the update to the new app.
I tried to go to my Smart app & look at my hub & get this message.
You don’t have any hubs yet. Please use the SmartThings mobile app to claim your hub.
Like I said it has been a while since I used this & at 70 yrs old I forget how to do things sometimes.
Would someone help walk me through the steps to set up my Hub again and also get me into webcore again.
Thanks, Mike

click on menu (3 bars in the upper left of the screen)
at the top, you should see your Home location with a pull-down arrow to the left
click on that pull-down and see if there is a second location
if there is, select the second location and see if your hub appears

I only see my main home location listed. See picture

Contact ST support. It may just be an issue where they need to perform a sync to get the hub to show up in the new app.