Since author started his commercial project in parallel, add-on is harder to use with new updates.
Starting from window that sometime never fill with data, going to misleading place of icon and no chance to get rid with commercial vault icon that I never use and ending on complicated dialog combination to save new entry. If there is update you need to find keepass confirm button on page because most of it is bloated by innformation about advantages of kee vault.
It is difficult to use since interface is not clean and author strongly promote his commercial product.
I'm relay in the crossroads using it from years, survived strict security rules from firefox that killed some of functionality. But now it is even worse so looking for alternative.