I've never done any of this before, so bare with me if I'm not giving enough info

So I bought a domain through Google Domains two or three days ago and bought hosting through Bluehost. Linked the two and everything was working great. I put a temp splash screen up on the domain name itself and made a staging site to get everything up and running on. Was finalizing my front page design through Elementor and went to take a break, but when I came back it wasn't letting me log in to WordPress through Bluehost and was saying the IP address couldn't be found.

After a bit, it came back online but was showing a temporary domain name in the style of "box.temp" rather than my domain name and my staging subdomain. None of my work is on these temp domains and neither is my Elementor lisence, so until I can get I back to normal I'm stuck. Has anyone encountered this? What do I do?