@yaboinoah52 File a support ticket, for this kind of thing however, you'd need proof.
It’s possible that the ‘farmlimiter' could have removed it to clear lag, if this is the case, then nothing really can be done. In future, keep an eye in chat as it typically announces that drops will be cleared before it happens. In general, just be more careful and hopefully this issue can be resolved, however I cannot promise it can be replaced.
Also depending on the TPS, dropped items sometimes go invisible, so if anything like this happens again and TPS is quite low, I’d suggest running around the nearby area just to double check the drops aren’t just invisible.