Can't Connect To Server

[RemixaTheHealer]

Hi. I have an issue. It won't let me connect to the school RP server. I've tried restarting my game and computer, deleting and re-adding the server, taking my mods off (Optifine and More Player Models), and none of those have worked. When I go to other servers it lets me join and doesn't disconnect me. And every time I try to join it gives me this message,
https://orig00.deviantart.net/f02a/f/2018/090/4/f/g_by_remixathehealer-dc7itog.png
I know you guys have probably gotten this a hundred times, but I really want to know what's going on. Unless the server is having an update or down for a while, I don't understand what's going on.
EDIT: Okay, I know that the server is currently down but it doesn't explain why I've been disconnecting multiple times...

 

[Meliorism]

This happens to me as well, please help!

 

[LordSplash]

I'm not exactly quite sure since it is only occurring to you on "Schoolrp.net", but could you send your Minecraft log when logging into the Server? Paste it into "https://pastebin.com/".
Currently, though, the Server is offline. May it be caused by that?
If the Server is back online and you still cannot log in, please paste your MC log into pastebin.com.
Good Luck!