There are other T & C's to consider when selecting a Click and Collect option.
eBay will automatically offer Click & Collect on your listings if:
Your item is over £5
You're offering a quick dispatch time (0-3 days is ideal)
Your item weighs no more than 15kg (including packaging) and no one side of the parcel exceeds 90cm, with max dimensions of 0.324 cubic metres. (Any items that are too large or exceed the weight limit will be rejected on arrival at the Click & Collect location and may be disposed of, without reimbursement)
Your item isn't classified as dangerous or age-restricted
Please see the guidance here:
https://www.ebay.co.uk/help/selling/posting-items/setting-postage-options/click-collect?id=4180&st=1...
Even if it has been applied to your listing it may not be available to your buyer, it depends where they live and if there's a Click & Collect store local to them.
If you see your item complied to all of the above, it may be worth contacting eBay Customer Services, maybe there's a site glitch or they can see where the issue lies here.
This is the easiest and quickest way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open between 8 a.m. to 10 p.m. on weekdays.
9 a.m. to 6 p.m. on weekends.
I recommend contacting CS very first thing in the morning, when the lines first open, as there's more chance of Dublin answering.
@704611
