Delete Footer 4 columns

Hi!
I have downloaded the Foodica theme that include 4 footer columns at the bottom.
Nevertheless, I cannot cancel any of those columns no matter if I put no widget on it.

Is there a way to cancel those 4 columns? It appears to be a theme setting so I can’t find a code to change this. I would like to replace this with an instagram feed in landscape format.

I’ve seen the same question was asked a year ago but there was no reply.

Thanks,
Anna

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