You can export entire albums on the export page (do one by noe), move the created .zip files from the ‘depot’ folder (…/wp-content/wppa-depot/your-username/) to your depot folder on the target site, and import them.
Unfortunately you will not move all album and photo metadata, because this procedure is out-dated and needs to be re-designed an re-implemented.
It is recommended to import the albums one by one, site by site. Make sure you cleanup the intermediate files at the import end after importing each album.
Although it can be a bit tricky, especially when there are many photos per album, but i should give it a try.
For copying the settings, make a settings backup file in Table VIII-A2. This generates settings.bak in your depot folder, move this to thr target site and load it in Table VII-A3: — restore backup —
Afterwards, check and correct if needed: Table IX-H3:Source directory