All I have to go on here is the video posted, in which you are clearly very laggy and/or have high packetloss. Therefore, the server gives you the satchels back, but before your game actually gives you them, it tells the server you have 0. The server updates its internal counter which keeps track of how much ammo you should have to 0, but then your laggy game catches up and tells the server you actually have 5 ammo or whatever. The server goes 'uh, no, you have 0, you just told me so..' and removes them.
This is how the weapon/ammo anticheat works. I can't really change it because doing so would allow people to cheat.
I don't know what you want me to do tbh. Get better Internet.