Co-op groceries collection help

[ParsnipPie]

I’m struggling with an online order for Co-op groceries. If anyone uses co-op regularly and can advise me, I’d be very grateful! I can’t find the info I need on their website.
Normally I use Asda, and know what I’m doing, but we are off on holiday and the only option for that location is a Co-op click and collect order.
I’ve booked the slot, started adding items etc. can I check out and continue amending the basket later? Don’t want to lose the slot, my shopping, or my marbles! Thank you.

I found this at last OP. I've just started using them myself as it's closest and quick.

But I've just read the full terms, and if you accept a sub you pay the full price, and if you order a meal deal and somethings unavailable you have to pay the individual price for the items you do get. They used to do a £5 deal with a meat, potato, veggies and ice-cream, all branded like birdseye and Ben and jerrys ect, and just the dessert would cost more than that.

So, it says you can't amend your order at all once you've checked out 😞

Thanks for your reply. Their internet ordering systems don’t seem to be as shopper-friendly as some of the other supermarkets.