In fact, the initiative still lies with the thesis tutor. You can try to find the supervisor's superior and send gifts or something. If the effect is good, things will be easy.

Now many of these tutors seem to have taken hormones, one by one, because they also understand that once you leave school, they can no longer be binding on you. In the meantime, the tutor holds the power of life and death for your graduation.

In your present situation, if the gift is not good, you can send someone. If you send a living person, you can find a teacher to stay. It depends on him (her). Attention, you must stand up to him and listen to him criticize all your mistakes, all the injustices he has suffered ... in short, listen, hold on. I estimate that he will read your paper in a couple of days. If this doesn't work, you can discuss it with your family and send a big gift package. Four years have passed, and there is only one last point left.