After changed email password i unable to send email from BUSY even i entered new password in email configuration still showing error wrong user name / password

We have to create app password for BUSY if you changed password of your email id.
 for creating app password should follow these steps.
 open gmail id on chrome
 step 1. Click on the email profile iqon in upper right side 
 step 2. Click on manage your google account option
 step 3. Then click on security option
 step 4. Then go to 2-step verification and turn on this option.
 Step 5. Go to app password which will appear at the bottom of the page of 2-step verification
 Step 6. Fill app name BUSY then click on create option 
 Step 7. Select the password which appear in a window,copy and paste in BUSY sofware email configuration in password option.
 And to Send the invoices you can follow the steps
 Step 1. Go to transaction menu click
 Step 2. Select that voucher which you want to send then click
 Step 3. click on modify option then voucher will open in modify mode
 Step 4. Select email option
 Step 5. Select the format
 Step 6. click on email
 Step 7. fill email id of party 
 Step 8. click on send or you can check after click on test account settings.