No Option for International Shipping when Revising Listing

[contingo_collectibles]

Hi, I looked at a very similar thread titled "No option for international shipping when listing" but could not apply the info there to revising my Buy It Now listing. My listing ID is 4822646622311

I attach the screenshot of what I can see. The option to add International Postage is greyed out and I can't see any switch to turn it on there, or when I click "Add a Second Delivery Service" (only domestic options appear), or anywhere else. I cannot see a "See Postage Options" button to click. Is it because the listing has been up for so long? Any help much appreciated!

[snowylilliput-2]

My advice is you contact Customer service they will be able to help set up your international postage preferences. I do it no problem so it must be how your selling preferences are set up at the moment