Widget Importer & Exporter says:
“Homepage
[Shapely] Parralax Section For FrontPage We Change Everything WordPress Widget already exists
[Shapely] Parralax Section For FrontPage SEO Friendly Widget already exists
[Shapely] Parralax Section For FrontPage Portfolio Section Widget already exists
[Shapely] Parralax Section For FrontPage Small Parallax Section Widget already exists
[Shapely] Parralax Section For FrontPage Limitless Options Widget already exists
shapely_home_portfolio Our Latest Projects Site does not support widget
shapely_home_testimonial What Our Customers Say Site does not support widget
[Shapely] Client Section For FrontPage Our Partners Widget already exists”
@marsowy can you try to add them manually? there is no necessary use only import for this widgets, you can manually add them as a widget from the appearance> customize > and navigate to the homepage widgets customizer to add widgets on the homepage,
it’s hard to get why widgets missed during import but if you can add them from customizer i think spending time on the investigation is not necessary
let me know results
Please go to Jetpack > Settings > Custom content types and enable the Testimonials and Portfolio options, once that is done try to run the import once more.