I think gaps close based on the reason for the gap occurring. If this were a typical pump and dump, then an opening gap would definitely fill However, this is not the case for the stock. Don't know what's going to happen with this gap.
Not all gaps get filled, this one had gaps downward that never got filled. They don't show anymore because they happened to long ago. Just an FYI gaps don't necessarily need to be filled and aren't always filled. Technically it is nice not to see gaps, but many stocks never fill their gaps and over time they dissapear. IMHO GL