Would invisalign/braces be able to fix this open bite? (photos)

I highly recommend you see an orthodontist.  Without full records and an exam I cannot say with certainty, but it appears that your open bite is not too severe that it cannot be corrected with orthodontic treatment alone.  In face, treatment with clear aligners is an ideal choice for you over braces as it will allow for more efficient intrusion of your posterior teeth which will help close your open bite.  In addition, although you may have stopped the habit, you may have developed a habitual low tongue posture from your open bite.  This should be addressed with myofunctional therapy that trains your tongue to stay on your palate rather than in between your teeth.  This will help with the long-term stability of your bite correction.

Invisalign or Clear aligners would be able to correct this problem.  If the habit is gone, and you wear retainers as prescribed after completion of treatment- you should not have a relapse.