I know those from several Teams/Clans.
Easiest way to handle it is to say:
"If you want a server, pay for it"
Then you will see, if your team needs a server or not
Shame your site is only in German Alex. English would be handy for those of us who aren't fluent in German, and who really don't want to use Google Translate for everything
Not meaning this in a bad way, so don't see this post as bananathing.
If I want to have a car, I'll have to pay for it. If I am in a sports club and need some equipment, then I'll have to pay for it. If I get on the bus, I have to pay and if I want to host a server for whatever reason, then It is going to cost a little money.
If your team mates don't want to donate then it is perfectly okay with them, but you shouldn't try and get everything for free.
I could buy a twingo right away now, but I could also start to cry and scream around that I want a Porsche. Noone is going to pay for my 911, I'd have to look around how to get it a bit cheaper, and if I can't afford one now, I'd have to save money and take a cheap offer when I am sure about it.
Why do you need the server 24/7, are you going to host a league or something? you can usually find over 600 mostly empty servers online, and if you want to drive any very special combos try to get in contact with the server owners, maybe they'll change something for you.