You can find your verification code to activate the plug-in on the profile setting page after you're signed in.
- Sign in to MUSIA.
- Click on the profile picture at the top-right of the page.
- Click profile setting
- Find the verification code in the profile setting page
- Click the copy button on the right
- Paste it into the MUSIA plug-in. (The copy/paste function only works when the keyboard input source selected is English.)