I have had to change my gmail password.
When I open the accounts panel I can see the account OK but cannot see any place for entry of a password.
Can someone please please advise me how the new password is entered.
There is no password stored in eM Client because the account uses oAuth (passwordless) token instead.
If you have changed the password in your Google settings, just restart eM Client. It should open a Gmail web browser page for you to re-enter your credentials. Once those are accepted, a new token will be created and you will pass back to eM Client where you can continue to use your Gmail account.