Steam CMD Not Showing Up

Hello and apologies if this has already been discussed before - there’s quite a few threads I see.
So, I’ve cooked my mod successfully, but uploading is acting strange. After putting in my Steam credentials, the last line that shows up in the log is ‘Loading Steam API…OK.’ Isn’t the command prompt supposed to show up after that? It just gets stuck there. Credentials are good, dev kit is up-to-date as well as the binaries and plugins, and Steam Guard is on.