Buyer getting shipping error message can not purchase

[phoenixhobbies]

A buyer from the USA is getting a problem message and can not purchase my item. I tried to help them by changing a few shipping options on my end. I asked them to go on desktop version site to add item to cart and request an invoice, and they do not have that option.

I also do not see send a invoice or best offer option in message or anywhere on my end to send. My item https://www.ebay.ca/itm/325115598760 Any idea what is going on and how to fix it? I have never encounterd this before.

Thank you. 

[pjcdn2005]

@phoenixhobbies 

You don't need to go through them all. As recped described in post 8, go into one of your listings, in the shipping and payments tab, change your location to the United States and enter a zip code  such as 99210 and then click on see rates.  Then go to see all listings (you might have to refresh the page)  using the view 'price, shipping lowest first' and scroll to the bottom of the last page.  The listings that say shipping is 'not specified' are the ones to be fixed.  The only one that I see now that doesn't have a US shipping cost is the one that recped mentioned in his last post.

[phoenixhobbies]

Oh yes, pardon me. That is what I mean and know, with viewing what listings show shipping and dont. I mean go through all listings showing shipping not specified, theirs a few to fix. Thank you.