My user is unable to view available quantity while creating the invoice on mobile

We request you to please check if you have given the inventory permission to user.
please follow the below mentioned steps:

Step 1: Go to “Invite users”.

Step 2: Click on “roles and permission” >> click on three dots >> click on “Edit option”.

Step 3: “Enable Products & inventory” option and “update role”.

Note: “You can assign roles and permissions from Web only”.