Does Invisalign really help overbites?

Sorry to see the frustrations you've been going through with your treatment.  Deep bite treatment is one of the more difficult ones to correct with Invisalign.  Please keep in mind that deep bites can definitely be corrected with Invisalign, but it requires the proper plan from the doctor.  Invisalign G5 features have been promoted to correct deep bites, but the doctor planning your ClinCheck simulation is still the most important factor in your treatment result.  In other words, you will receive a different result depending on the doctor you ultimately choose.If you have concerns about this, you should speak to your dentist and perhaps even an orthodontic specialist who is highly experienced in Invisalign.  Good luck!