How to change from studiox to studio

Normally

->On the start page of UiPath Studio, locate and select the Settings option.
→ Navigate to License and Profile.
→ Choose View or Change Profile to proceed.

In your case make sure that in your Organization in Cloud, you are added your user in the Automation Developer - Named User license group

Go to orchestrator admin ->Accounts and local group ->User account ->select user and modify → tick Automation Developer - Named User license

With Automation Developer - Named User you will have these software capabilities:

Action Center
Apps
Attended Robot
Computer Vision
Data Service
Integration Service
Studio
StudioX
Task Capture
Test Manager User