Issue 1:

If you don't see the Testimonials or Portfolio sections in your dashboard



Please make sure you've activated the Vamtam Offline Jetpack plugin in Dashboard > Appearance > Install plugins


Issue 2:

If the Vamtam Offline Jetpack is activated and you still don't see the Portfolio and Testimonials sections, please check if the Custom Content Types section in Jetpack > Settings > Writing are enabled: