I am working with Thunderbird 102.8.0 on Linux Mint 21.1 Vera base: Ubuntu 22.04 jammy. Maybe you don't need all that - I'm brand new to all this and don't know much at all! I don't understand, for ex. why it doesn't say "Cinnamon" up there, since that's what I'm using for Linux Mint, but anyway... I use Protonmail, and have finally gotten the protonmail bridge to work with Thunderbird. I have exported my contacts from Protonmail's webmail as a vCard. I saved the card in my downloads folder and I have opened the document to make sure it isn't blank - it looks like everything is there. When I go through the import steps in Thunderbird, though, nothing imports. I have tried several times, shut down TB, opened it again - nothing there. Can anyone help? Thank you!