How to change delivery day

Hey all, I’ve been suing Hellofresh for about a week and a bit now and I love it it’s perfect so thanks to everyone who’s helped ok the last post:

Stupid question but the Problem is I now want to change my delivery date to every Saturday instead of Wednesday starting Saturday 21st preferably – but when I go to change for my next delivery it’s saying it’ll be starting September 14th, does that mean it’ll delivery this Saturday? Unlikely as it’s only a day away, I’m not quite sure what this means. I’m hoping it’ll just skip the next few days and arrive on the Saturday as hoped but just double checking if anyone’s done anything similar before.