hello @douglasabreu PAD should be rendered in the language that Windows is in.
Please check that the language in Windows in set indeed to Portuguese: in the Windows search bar, type "language", choose "Language Settings" (or equivalent in Portuguese 🙂 ), check that Portuguese is set.

Sign out and sign back in. In the task manager, make sure to completely kill the Power Automate Desktop process.
Launch PAD again and verify that the UI is still in English.
If so: then please uninstall PAD: Windows search bar > type add/remove programs > look up Power Automate Desktop > click Uninstall
Then install the latest version of PAD: go to flow.microsoft.com > click on My Flows on the left hand side > click Install > select Power Automate Desktop
Let us know if this helps!
Happy Automation,
Amina