Frequently corporate governance issues in uplisting involve the independence of the board of directors or another issue regarding management structure. No way to know based on filing at this point, but if I had to guess, I'd say maybe they might have to appoint new folks to certain positions. That type of hangup can set them back a month or so. But it's only a guess.
Don't know for sure but it sounds to me like they need to improve their board. The exchanges require so many independent board members. Since you cannot just appoint anyone, they will need to search for highly qualified people and that would take an indefinite period of time.