I have the same problem from last 2 days.
The plugin to browser is also not working.
When I login to the website, it says Encode URL and its stuck at 0% from last 2 days.
Same for me. Its not working since few hours.
I logged in with my mobile device and was able to complete URL encryption.
Once done I disconnected from mobile and successfully logged from my PC.
Same problem but the mobile solution worked for me. Lastpass is bad.