I am on 10.15 beta as well. Synced to Dropbox. Enpass 6.2, 1 vault I can't even enter the password to my vault file now. After taking a few minutes to start up, I finally get where I can enter the password. Each keystroke takes a minute to show up and then I clicking the "restore" button doesn't do anything.
I've never had issues with the app until yesterday. Not it takes a few minutes for the app to load and then any action I take (mouse clicks, entering of password) takes a minute to respond. It is pretty much unusable. I tried deleting the app and reinstalling. I then tried deleting pref file. But issue still persists. Any help appreciated.