We’ve taken quite a long break from working on Flex Utility. Now that people are starting to use it we are getting the info we need about what needs to be fixed. We are going to start working out these bugs and hopefully bring the app out of beta and release publicly soon.
If you would like to try Flex Utility, the app that makes grabbing blocks better with filters for Prime Now and Logistics go here: https://play.google.com/apps/testing/us.flexswag.flexutility
Please leave feedback and crash reports in Flex Utility Testers Google+ group here: https://plus.google.com/communities/111427484538234386942
Appreciate it.