I have been fighting this all day. I have not listed anything yet as this is my first attempt. I have 30 items poised and ready to go and they all say this or variants for royal mail and parcel force. If i tick rate table it says create a rate table. Where, How.
try changing your shipping fees to ‘Flat’. Recently for some reason mine had switched to ‘Calculated’ on some listings, and what ever method (royalmail/courier etc) I’d select for shipping I’d get similar errors when verifying the listings…
I have had to create a paper shipping rate table with weights down one side and provider/service along the top.
Using this table and the dimensions/weight i had put into the package I was able to post all the stuff using a flat rate as suggested.
What is really weird is that i had started with 2 items and ran preflight and came back with a green no errors. So at some point during the data entry the green went to amber then red with, as above, ‘Postage type is not supported’ (even with collect in person). So having had a green which turned to red for no reason other than there were 30 items and not 2 I assumed it was garage sale and not ebay.