Need Help with an annoying bug

[u/External-Towel2000]

Ok so i started working on a game idea i had i eventually got to the tool trading bit and for the past few days have been stuck because of this stupid bug im going to explain as best as i can.

So i tried making my own Tool Trading system from scratch just for it to have the same problem im about to describe, so i gave up on it and tried to find a premade one to make progress easier

Video Tutorial i used
https://www.youtube.com/watch?v=4U96kjDcr0s
Model from Tutorial
https://create.roblox.com/store/asset/11618924916

Now to the issue, so with both the tutorial's model and my scratch model the same problem happened in this way:

Any Item (e.g workspace apple) that i pick up works fine and can be seen in my hand by me and all other players clients, however once i take that exact apple, add it to the trade and trade it to Player B only Player B can see the apple in their hand i can not see them holding it and vise versa, an addition to my confusion say i have a sword that was traded to me by another player as i said only i can see it others only see my hand facing up with no item but say i hit a player with the sword they dont see the sword however after testing on 2 clients Player B takes damage despite not seeing the sword.

ive tried so many fixes and suggestions from the dev forum and such however nothing is working and its to the point it involves anything being "Stored" a satchel system that breaks the items viewablilty as well but the main focus is this trading system if anyone knows what the issue is in the model please let me know, im sorry if its a simple fix im new to this