Does not work on Firefox Mobile. Found this on their forums:
"Hello All -
We’ve made the decision to retire LastPass for Firefox Mobile (only available to Android users) on January 31, 2018. If you are currently using this version, you can continue to use it but you will not receive any feature or security updates. Moving forward, LastPass is committed to supporting the Android platform through the new Android Oreo autofill API, as well as the original accessibility autofill service. In the short term, we recommend you use another Android browser, such as Firefox Focus or Google Chrome.
