Which further emphasises what I mentioned earlier, something on your computer (firewall or av) is blocking Aristois from correctly working. This is something you have to look into, I cannot help with it.
Donations are instant, as long as you provided the correct information. You will receive an email to the address you entered that has instructions how to get the donor perks. You can also read here
You cannot install it to "vanilla", as Aristois must run either Fabric or Forge. Since other launchers don't use the default file configuration, you must use it as a mod. Follow the modpack instructions
@draexo The flight module will not work with most AC, so thats most likely the cause. It should work fine on servers without one, including the test server you created
@dyiing nie mam teraz dostępu do komputera ale mogę powiedzieć to jest plik jak się wejdzie w crystalluchner-entient jakoś tak następnie są tam foldery paczek no a gdzie mam cheaty i tam następnie jest .Minecraft i usuwam ten folder "me" nigdzie indziej nie widziałem takiego folderu