Challenges publishing API from RStudio to ShinyApp

Hi All - super elementary question for the community in regards to setting up an initial RStudio/Tableau connection with Plumber. In R tudio, under "Publish the application or document" button, I see two options to "Manage Accounts" or "Publish API". My Shiny account appears correctly under "Manage Accounts" but when I go to "Publish API" and then "Connect Accounts", no accounts appear. When I attempt to connect to the ShinyApps option, the window just closes and the prior one reappears.

Any suggestions or guidance would be greatly appreciated. Thank you!