On the app versions, if you want to increase the quantity of a product in the cart, all you have to do is swipe right. To decrease, you can swipe left. If you wish to disable this feature so that the user has to manually enter the quantity value, follow the steps below.
1. Go to Settings.
2. Press General Settings.
3. In the App-Specific Tweaks section, select Enabled under BLOCK SWIPE TO INCR. QTY. Select Disabled from the drop-down menu if you want to revert back to swiping left and right.
4. Scroll down and press Save.