Multiplayer Inventory System not working

Hey,

I have combined these two tutorials;

Advanced Sessions: [ue4] Setup Advanced Session - Steam Multiplayer #1 [Tutorial] - YouTube

and

Slot Based Inventory System: Showcase: Slot-based inventory system in Unreal Engine 4 - YouTube

My problem is that when I have two players on the same level, the UI no longer receive any input from the mouse. I will provide a download link for my project if anyone is able to check if I’ve missed anything.

To replicate: Set number of player to 2 and play in the editor. Select Multiplayer on one client and create the server. On the other client select Multiplayer and search for the server, Join and select a character on both clients. Start game and both players will spawn in the level. Press ‘I’ to open up the Inventory widget. You can now see the mouse cursor but it won’t interact with the Inventory at all. But if you only have 1 client connected then it works fine.

Any help??

Download Link: https://www.mediafire.com/file/9wa1ata8qac3b9a/5v5_Game.rar/file