HELLO! @Abby
Welcome to the LastPass Community.
This issue could be related to a VPN or internet security program that changes your IP address constantly, for security reasons LastPass needs to verify the IP address you are using to ensure you are the one trying to access the account.
To resolve this issue, you have 2 options:
Please let me know if you need additional help.
Greetings!
Verlaine | Customer Care