I can't clear the login data for windows client app

I was experimenting with the client for Win. After a while, I set up my server, but forgot the password from the client (there was nothing there). I delete the application, clear the data… But after installing the application from the Microsoft store, I need to enter the password. How can I clear it so that I can enter the server and login data?
windows 10.

Take a look at:
personal account - settings - security - devices/sessions
delete the appropriate entry.

In your “Documents” folder you should see a folder named “nextcloud_passwords_client”. Just delete that and restart the app.