To import from KeePassX, you must export your records from there first.
Mac & Windows
Click Database > Export to CSV file.
2. Name the file and click Save.
Log into Keeper's web vault at https://keepersecurity.com/vault/
Click on your account email in the upper right-hand corner.
Click on Settings > Import.
Choose KeePassX from the list.
Drag the exported file into the target window "Drop a File Here"
Use the drop-down menu in each column to map to a Keeper field.
Click on Import.