I'll tell you how to get a sensei or sempai to start teaching you. It's pretty simple and has been told before to many people asking for help on the same issue.
Step 1: Patience
Remember that people are still people and not robots that can do the same thing all the time and at any time. If you wish to understand this then you'll have to grow up to experience it through life. This needs to be the first step to learn so you can get a master to teach you.
You say you have been waiting since january, but multiple people that are great fighters or jutsu collectors/makers have waited much longer than that. I for one waited a great half a year for kaito's training in the art of taijutsu since he is the best and I wished to be his student.
The more popular the master/teacher the longer the wait. Remember that if you wish to learn quickly it won't matter if the quality is bad. All sensei and sempai have their form of training weather it be super detailed to video type. You need to understand who could teach you the best and in ways that will make you learn and become stronger. Explore many options and don't set your goals on just one person unless that is truly the person that can teach you the best.
Step 2: Respect
Contrary to popular low ranked belief, spamming the vm box and pm box of fellow sensei and sempai will not get you training any faster. This actually lowers your chance of being picked first and even ignored due to your lack of respect towards the busy schedule of the sensei or sempai in question. This not only gets you in bad terms with sensei or sempai, but perhaps even other masters or teachers since they all talk to each other and know one another.
You may think this is their job, and in a way it is, but they did it by choice and by testing. They choose to be someone you can look up to and ask for guidence, not a computer screen with tutorials that are on 24/7.
Step 3: Priorities
Remember that you don't need to master 1 element all the way before you can learn the others. This is actually slowing down your training and you will possible lose interest. Training is hard work, even if it is just text in a small game. You respect the training, understand it's difficulty, and learn accordingly at your own speed and at the master's discretion.
Step 4: Friendship
As much as you want training, this is a way to build a friendship with another member of the forums. Regardless of their status you can always try to be friendly and this will help you to become friends. Last time I checked that friends are also priorities towards help and assistance towards multiple goals.
Now there is a difference between sucking up and being a friendly neighbor. You need to know that everyone is a person and if you try too hard to just get on their good side, they will notice. Be subtle, be gentle, and try to no over do it. You're trying to become friends with the person, not making it a one-night stand.
This isn't true with some people though. People that are sensei or sempai might not want friendships with people they teach or perhaps just don't like you that way. This might be a reason why they won't teach you or might ignore you. This isn't against the rules at all, a sensei can teach who they want if they are asked to by anyone. They are there to help, but a person that they don't like will not receive help and even if they do it won't be quality help. One way to fix this is to apologize for what you have done in the best, or if you did nothing wrong perhaps prove to them that you are worthy for a friendship or at least training. Respect goes both ways from student to sensei and sensei to student. You must earn it and if earned you are also given the same respect.
Good luck with training. Hope for the best.