Hello @thom.poole,
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 account. I could not find any failed login attempts on your account. What happens when you try to login on desktop?
Additionally, having your device type as mobile does not prevent you from being able to export on a desktop. Please see this article.
Thank you,
Henry | Customer Care