A: Please left click the address bar and press ‘Enter’ key to do a full refresh.
A: Please follow the instructions below:
1. click into any email inside the Gmail website, even if note is not available.
2. click the extensions icon, pin extension of ‘Simple Gmail Notes’.
3. click the icon of Simple Gmail Notes (blue envelope) in menu bar
4. click ‘Preferences’.
5. Scroll the page to bottom, and you sould see the debug information.
6. Copy and paste the information from there and send to the developer: