Where can I fix that
Hello @leap51601
Thank you for reaching out to us in the Community. I'm sorry to hear that LastPass is not adding your new passwords properly.
LastPass needs to have active the LastPass extension in order to automatically ask to save for your master password and added it to your vault properly.
Please make sure you have it install and that you are login to your account. If so, I need you to follow these steps to complete the Basic Troubleshooting:
If assistance is still needed, let us know, so we can continue working with you.
Best,