Yes its possible!
You can upload any custom files to your server using “FTP File Access”.
FTP its like all your server’s files and archives.
You can upload by yourself using credentials in the multicraft panel.
I highly recommend a program thats calls “FileZilla”.
FileZilla can upload any heavy file.
Does not matter what you want to upload.
“FTP” its all your server files.
ALL OF ALL WILL BE THERE
THERE IS NO MINECRAFT SERVER WITHOUT THE FILES.
Alright let’s go
Is there a button on your multicraft page written “FTP” never entered there?
I saw that you had problems with the version.
So I’ll give you some knowledge.
If you want, you can upload yourself a custom Jar file for the version.
First, stop your server.
Open your FTP whit a program like "FileZilla"
Its there a “Jar” folder
You can download a custom Jar file (for a custom version) here.
Upload the file to the “Jar” folder.
In your multicraft panel, put the same name.
Multicraft will search for a file with that name in “Jar” folder. And will execute it.
I know, terrible service not even a sorry. Most of the reviews online mention these problems happening too much and apparently this is one of the worst mc hosts out there. That will teach us a lesson to do our research first.
A lot of people have said this site is a scam and servers usually go down 48 hours after going up just so you can’t get the 24hr refund period.
Well first of all using an ftp client like FileZilla to connect to your server files is necessary. Then if doing a fresh install delete all files. Then you first install the base forge server to your own pc. Run it once till it shuts down due to eula not being true. Edit the eula file to be true. Copy the files to your server files through FileZilla. Then set the jar name in the multicraft settings to the same jar that is in the server files. And set the location for the jar file under advanced settings to be server base directory. Save.That is what I did and how I normally set up my servers when they are modded. Currently if my panel did not have a daemon error it would be up and running. (Not an issue with the install but an issue with the host.) Hope this helps. Though mod conflicts if you are setting up a custom server are always a problem. Normally I just run packs that come with a server download, but you can always add a single mod at a time, then when they don’t work remove the mod that conflicted. You’ll have to either set a new world name or delete the world folder so that it creates a new one once completely done so that all modded terrain, buildings, and resources spawn in the spawn region. But once done it should be “fairly” stable depending on the amount of mods.