Mod Version: 0.12-91
Forge Version: Forge Multipart CBE 2.6.2.83
Modpack: FTB Revelation, with mods shown both here: https://pastebin.com/7T4d4w55 and here: https://ftb.gamepedia.com/FTB_Revelation (We also added Mekanism 9.8.2.389, but no part of the system described includes any mekanism additions)

The Issue: So I set up a basic biodiesel distillery on a multiplayer server, which was functioning for quite some time until it stopped. Up until this point plant oil was inserted on the left, and Ethanol on the right. Now, ethanol piped in from the right will be inserted in the left tank in the GUI, and the left input won't accept any fluids. I've tried replacing the pipelines, rebuilding the squeezer multiblock, completely destroying and rebuilding the refinery multiblock, still broken. The oil pipe still works, as it pumps into a tank when connected, but still won't insert into the Refinery. It also doesn't help how Jerrycans can't be inserted into either of the 2 tanks' bucket slots, so no oil can be manually inserted and ethanol is lost on every re-structuring.

Good reminder to everyone, never assume what you squeeze = Plant Oil. Turns out i've been making canola oil the whole time which isn't compatible in the least.