I have experience on setting up Minecraft servers and installing mods. I used to interact with a child that relied on me for computer maintenance. One common reason for mods not working properly is a conflict among them (there are mods that cannot be installed together), and you have multiple mods installed.
If you share with me the log files of the Minecraft server (which are usually stored at the "logs" folder, which is inside the ".minecraft" folder, which is inside the %APPDATA% folder), I'll be able to judge if I can solve your problem or not. So let's chat so we can get started.