Nice app, but have problem with moving to another mac

On my mac mini working fine, but when I connect external SSD drive and install new Mac Os on it, I launch Dashlane and try to import secure backup - it doesn`t work.
And now I cant figure out - how get access to my passwords.
Safari browser extention didn`t installed too - error.

system4id about Dashlane - Password Manager, v3.2.2