Yep, Simple Delivery is now mandatory for Private sellers.
However, there is still a ' tech' issue for lightweight/ oversize items, and those under £5 in value. All those items are exempt from SD but the Custom Postage is not showing.
There is a workaround.
From the link below Go To Solution and follow the advice in Rick's answer to list your item, it can be adapted for your lightweight items, too.
https://community.ebay.co.uk/t5/Seller-Central/how-do-you-list-anything-bigger-than-61cm/m-p/7882638...
@tinas-lovingcharms
