Either instructor is fine for Fundamentals.  If you did not enjoy Lisa's material, then switch to Anders.  If you did enjoy Lisa's teaching & made progress, then I'd encourage you to use her courses.  And that's related to additional advice about starting again after a layoff.

Learning and practicing guitar requires consistent & repetitious practice.  You need to go over the ideas & physical motions again & again until they become second nature.  Returning to the material you already covered is a great way to restart & reinforce the learning & practicing process.

Hope that helps!  Please ask more if necessary & best of success.