Can't find "added" mod request on mods list for the server (Forge & Fabric mod)

So yesterday I requested the mod "Water Erosion" by 13rac1, and my post was answered with the good ol' "Added" message and closed the thread, but I can't find the mod in the server settings. I tried differents versions (1.15.2 and 1.16.1) with Forge and couldn't find the mod anywhere there? Is it just that the mod is added some time after the forum reply, or is there something that I'm missing here?

I think I see what happened now. Although the mod offers both Forge AND Fabric version, it seems only the Fabric version got added to the mods list, I did specify in my post that I was looking for the Forge version, although understood if both were added, but instead only Fabric version was added.

Thanks! I guess this thread can be closed now. Cheers!