Illegal postage change

[fitzmooney]

Seller has offered free postage, but when I go to pay a large amount of postage has been added without asking my permission

[padi*0409]

It has been noted on the boards that when people use the app it shows as "free postage" but in checkout the correct postage is shown.

Were you using the app on a phone perhaps ?

[sandypebbles]

What is the item number?