Hey there! Kristina from the Help Team here.
It sounds like you're referring to the Rank Tracker tool.
If so, we made some changes to the tool in our menus due to the announcement of us sunsetting the tool on June 8th. In case you missed it, you can read more about that announcement in this Q&A post here.
You can now access the tool by navigating directly to this URL: https://moz.com/researchtools/rank-trackeror by navigating to your Moz Pro Home option and then scrolling down to the available tools. I made a quick video here for you demonstrating this piece.
I hope this helps but certainly let us know if there's more we can assist with on this, and sorry for the confusion!