[Refund Request] Chunkloader keeps disappearing

[xXSantyXx]

Your Name: xXSantyXx
Item Name + Amount: Chunkloader (2)
Coordinates (format x, y, z): -3416, 1360, 94
Coordinates of Death Tablet placed in a chest: 
Description of Issue: Chunkloader dissapeared once, it was said to me in chat that that happens sometimes, i didnt bother i bought another one but now it is gone too. I would like to have the refund but it would be nice if anyone could solve the issue.
Screenshots (Optional): 

[Reverser]

Items placed in inventory.

T/C