Pixelmator and Peakto update

Pixelmator and Peakto update

1) Why when I import a Pixelmator catalogue it appears as a Watched folder and not a a source like Apple Photos and Luminar Neo. To add Pixelmator catalogue I select +/add catalogue/select my Mac hard drive/ and then select the folder where my Pixelmator Pro files are stored. 

2) When I try to update Peakto I get an error message. See attachments.

Thanks

Derek