Found the answer
https://aldiko.zendesk.com/entries/3...th-an-adobe-id
Can do it on the nexus itself
Got a bit stuck as no menu button on tablet
But since Aldiko itself said it wouldn't import the eBook , did it the other way round. Pressed hard on the Epub file and a sign in to adobe box appeared from nowhere lol
So all books added
Google told me lots of folks are getting puzzled with it lol