Hello @melaniegoodman​,
My name is Henry and I am happy to assist with your inquiry, and appreciate you contacting LastPass Support!
I am sorry about the issues you are having with your session. If you are being logged out from LastPass constanly, you can check the auto logout settings in the General Preferences of the LastPass extension.
If you are being logged out from other sites, this is not within LastPass capabilities. You may be logged out due to your browser settings or the other sites policies.
Thank you,
Henry | Customer Care