Welcome to Firefox for Android Add-ons.
Add extra features and styles to make Firefox for Android your own.
CloseReview for Gmail Manager by daffy11377
Rated 5 out of 5 stars
Version 0.5.7.5b2 works great.
You may want to just re-enter your passwords because that may be the issue of those who report it is not working.
I just donated since this is a can't live without extension with my 4 gmail accounts.
To create your own collections, you must have a Mozilla Add-ons account.