Data must be in a .csv file arranged as URL,Title ,Description in that order, without column headers.

Create the the database which must have only one column, which must be of Type "Links". Delete the other columns.

Click the "+Import Rows" button; Browse to and select the .csv file. Do not select "File has  Headers"  . Click "Import"

You should get a database, each "line" consisting of the  clickable Title over the Description.

 

The official Groups.io user documentation is in the Groups.io Help Center.