Thanks for your response. As far as I know there was no backup.
My first question would be; is it a known issue that Enpass decides to wipe everything and starts as if you use it for the first time?
(to be clear, I have user "a" on my iMac, under which Enpass stored all my passwords then I created additional iMac user "b", but when I logged back in as user "a", this happened)
My second question is; what is the file location where I might find my data and restore it on my iMac?