Hi, I have installed ArcGIS pro on my laptop. I have the licensed version from my university. I can not add rectangle textbox or dynamic text, it says "This command is currently unavailable"
If practical, I'd try a clean installation. How To: Perform a Clean Uninstall and Reinstall of ArcGIS Pro
I'd also recommending sharing a screengrab/info your current version and licensing info from the Pro license page. I'd gather other details such as OS versions, specs, .NET version etc. as this will be helpful if an Esri support case is raised.
Screenshots or GIFs of the issue would also be useful to help others understand what may be causing this.