I am using Windows 10 1709 with Firefox 56.0.2 and Enpass 5.6.2 (Windows 10-Edition from the App Store). The latest Enpass-Plugin 5.5.0 for Firefox never get a connection to the Enpass App. But with the old Enpass Plugin 5.4.3 from the Firefox "Plugin Store" it works. That solution works at the moment. But with the releas of Firefox 57 the old Enpass Plugin 5.4.3 will stop working under Firefox. Has someone else this problem?