can't see attachments

[Dafel]

Hi

I am a Mac user (OS 10,13), with an Android phone. I just bought an Enpass license, and imported my database from 1Password.

I am having problems in opening attachments (all of them in pdf format). I go to the Item, find the attachment, put the mouse cursor over the three little dots at the right but only the "Download" option appears. If I download the item to desktop, I cam't open the downloaded PDF file because it says it is a "damaged file". Any idea? thank you very much!!!