How to remove/customize native mobile buttons (e.g., Products/Add Product Consumed) in Field Service Mobile App?

Hi everyone,

I am trying to remove/replace a button (specifically the native Add Products Consumed / Products tab action) from the Salesforce Field Service (SFS) Mobile App

, but none of my changes are taking effect on the mobile app. 

Here is what I have tried so far: 

1. Page Layouts: I edited the assigned Work Order and Service Appointment page layouts via Object Manager, removed the related action/buttons from the Salesforce Mobile and Lightning Experience Actions section, and saved.
2. Salesforce Article Workaround: Followed the official SF documentation (removing Products Consumed and Required Products related lists from Page Layouts), but the button/tab still appears on the mobile app.
3. Field Service Mobile Settings: Checked Setup > Field Service Mobile Settings, but we are currently using the default system configuration (no custom Mobile Setting record exists yet, and I would prefer not creating a new one if possible).
4. Mobile Cache: Forced a full Data Sync and cleared cached metadata on the technician's mobile device (and re-logged).

Questions: 

1. Is there a specific hidden dependency or Page Layout assignment required to override standard mobile actions on Service Appointments / Work Orders?
2. Can native SFS mobile buttons/tabs be hidden or swapped without creating a custom Field Service Mobile Setting record?
3. Has anyone successfully removed/replaced this button recently on the SFS Mobile App?

Any advice or pointers would be greatly appreciated!

Thanks in advance!