On 7th of April when Simple Delivery starts RETROSPECTIVELY applying itself as the only mandatory option on all your historical Ebay listings made weeks, months and years ago ? what is it actually KEYING on (which fields / criteria) in order to determine the postage weight class (tranche) and cost ?  Is it "Package Weight" and "Package Size" fields on the Ebay Item ? at the moment it's showing as "(optional)" and sadly it's showing all the fields as blank as I never had time to weigh everything and measure the dimensions and input them, nor was I asked to do so before this forced Simple Delivery option !!

I'm currently using 'Postage Policies' under the Ebay 'Business Policies' section here:

So what do you think Simple delivery will be keying onto in order to auto generate the postal weight categories on 7th April 2025 or 15th or whenever ?

Anyone ?