Earphone buttons stopped working but audio and mic is good

Hi,

I just noticed during the past couple of days that the buttons on the wired earphones that came with my iPhone SE2 has stopped working.

The earphone's mic and audio still works great, I just can't use the +/- buttons to increase/decrease my phone's volume or press and hold the answer button to skip to the next song when using Spotify or any other multimedia apps.

The only notable change I did to my iPhone before this happened was to update the iOS version to the latest one (iOS 14.4.2 as of this writing) so perhaps, maybe some settings on my phone were changed when I did the update that could have caused the earphone buttons to stop working?

Anyway, my question is, does the iPhone have a setting available that will allow a user to disable button functions on an earphone?

I tried looking for it myself in Settings but can't seem to find one.

Appreciate any help or suggestions that the community can provide.

Thanks.