I have another related issue: it is not possible to export your TOTP seeds from lastpass authenticator.
I contacted the lastpass/logmein dpo, which (in my case at least) got forwarded to their generic support-by-email. They were slow to respond, and eventually claimed they could not export my one time passwords because they are encrypted. This is obviously false, they can decrypt the data just fine (I actually switched to a new phone, authenticator data got synced as you would expect). And other apps such as Google Authenticator allow you to export your data.
I filed a gdpr complaint with my national Data Protection Authority, which after a long response time got accepted, and is now forwarded to the Irish DPA.
If you want to assert your rights, contact Lastpass/Logmein at privacy@logmein.com or via their support page [0] (from their privacy page [1]), and demand access to your data. If they refuse, or do not respond within 30 days, file a complaint with your DPA [2], with proof that you requested your data but got denied.
[0] https://support.logmeininc.com/contactus
[1] https://www.logmein.com/nl/legal/privacy/international#right...