Missions are not regenerating, I am unable to take any mission on my plane location

I was in a similar position having started in Hawaii. However, I was able to see that I could actually fly the missions that were on the other side of the planet (The Gold diamonds) you might qualify to fly one: It relocates you to where the mission is (FOR FREE) and many more missions become available to you in that area.

Maybe something is wrong with the system, but there are also built in ways to continue your career. Unlike real life where Pilots probably have to relocate themselves at their own cost. The gold diamonds pay for your relocation. As in real life for people in Hawaii, they have to move to the major States to advance their careers. They can always return later.

Also, once you unlock instrument training, the live weather missions will give 4 times the credits and 10 times the experience in a single first flight mission - you can get to lever 30 in a single day (They’ll probably nerf that with the next update I suspect), in a few missions you will have enough to unlock all of the first teir certifications. Now I have more missions than I can ever hope to do