NOTE: If you cannot remember your current login details or password, please contact our Support at support@musescore.com or do it via the app.
Here is a short instruction on how to change login details:
1. First of all, you need to log into your MuseScore account via the website.
2. Then open a profile menu (a round icon in the upper right corner of the header);
3. Click 'Settings';
4. Click the 'Account' tab and update the information.
Don’t forget to save changes!