how to apply 'immediate payment required' for listings with 'buy it now'?

[byemyblurays]

I'm a former buyer and now a new seller, still getting the hang of things and adapting to the changes on ebay seller hub as of late...

So I always had my items listed with 'buy it now' + 'immediate payment required.' Then I saw today an item somehow got sold with payment waiting... which shouldn't happen. I checked into my most recent listings and noticed that the 'immediate payment required' option was not even selected anymore... And I tracked back as far as 5/10/21 when this option stopped being applied to my newer listings. I think it might be due to the new revised seller hub, but that's just a guess.

Anyway, is there a way to apply this 'immediate payment required' option to 100+ live listings, rather than going into every single listing one at a time just to edit? I hope there's an easy answer to this that I'm overlooking...