I loaded up my server 30 minutes after closing it and once i got in everything me and a friend built that included the create mod items such as a windmill were missing. The server has the mod downloaded and me and my friend, everything just disappeared

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

have you verified that the mod is loaded in the server after this restart?

i dont know much about how servers work, i got a friend to help me. when we are in the server the mod is downloaded and everything because we can still craft everything its just that all of our progress within the mod is gone.
im currently in creative mode restoring our builds

Try /forge mods list send what shows here :)

[12:31:12] [Server thread/INFO] [minecraft/DedicatedServer]: Mod List:
? minecraft forge-1.16.4-35.1.37-server.jar : minecraft (1.16.4) - 1
? mods_folder simplefarming-1.16.4-1.3.5.jar : simplefarming (1.16.4-1.3.5) - 1
? mods_folder vanillahammers-1.16.2-2.1.3.jar : vanillahammers (2.1.3) - 1
? mods_folder forgemod_VoxelMap-1.10.14_for_1.16.4.jar : voxelmap (1.10.14) - 1
? maven_libs forge-1.16.4-35.1.37-universal.jar : forge (35.1.37) - 1
? mods_folder oneplayersleeping-1.16.4-0.0.5.jar : oneplayersleeping (0.0.5) - 1
? mods_folder morevanillalib-1.16.4-1.3.8.jar : morevanillalib (1.3.8) - 1
? mods_folder create-mc1.16.3_v0.3e.jar : create (mc1.16.3_v0.3e) - 1
? mods_folder MoreOresInONE-1.1.jar : moreoresinone (1.1) - 1
? mods_folder jei-1.16.4-7.6.1.65.jar : jei (7.6.1.65) - 1

is this what ur looking for?

these are all the mods in the server and its worked fine up until an hour or two ago