Hey, @rishi - First of all, we’d like to apologize for the delayed response.
It looks like your screenshots aren’t in your link anymore, but I think I can respond without seeing them.
When Hardware Mode is enabled, the +/- buttons disappear because they are a component that could be controlled with an external device, so to save space, they are removed from the UI.
If you’d like to pitch bend with the screen, you must ensure that Hardware Mode is disabled.
I hope this information helps! Feel free to reach out if you have any further questions, and have a great day!