That's true, some regions have been restricted from having access to playing some particular games, everything depends on the games provider and their choice or decision taken, why we also have some that don't please restriction in some region, but I want to believe that each casino you see have their own policy so as to work in their own favor because they have their kind of target the work on when it comes to Geo they cover.
Mostly these issues stem from countries and regulations. Sometimes providers or casinos may implement some regulations wrongly but I would not blame them for that, because there are many regulations and they are different and even sometimes inconsistent. It is best to not get attached to any game in particular so if something changes in the future you won't have issues. For some reason a game that was previously available could be made unavailable in the future in your region but if you are not attached to the game you won't have an issue with this.

Right now, I am down to 12th place in the wager tournament. Its been a tight race this week. I have the chance to overtake many of those who passed me, but I wont do it. My plan is to place my main wager in the final hours of the last day and aim to climb back up the rankings at the last minutes. No matter what I do right now, there will be someone who overtakes me. For now, I guess Ill just let them enjoy the top spot

You still achieved very good even at this rank, congratulations! I know tournaments like this can be tough on the internet, even when they do not involve money such as in this case. There are simply many people in the world and some of them will have the time or resources to get dedicated completely to some of these things, but most of us are busy, have to do a lot of work or are constrained by budget. You should remember that you are doing your best under the conditions of your life, and I think you did pretty well.