dansan Not to speak on stellarterms behalf but there is a verification process to get listed on there. They look at the project as a whole before it gets added, its really tough. What is much easier to get listed on is Stellarport which just requires some basic toml and a little bit of volume.
I should add that StellarX is the most exclusive exchange to get listed on. They require full company / project paperwork and an interview with the developers, it also helps to have SDF support as well when applying.
It can be very frustrating but think of it all as an immune system against the rampant ICO scam mania of 2017. Also keep in mind that unlike (another major token platform) it isnt pay to play, they look at a projects merit before listing and you cant just throw a bunch of money at any of them and get listed to start scamming people which is a huge problem on other platform exchanges.