Attitude keeps saying my payment failed.

yeah, pre paid suck internationally, sorry. But the attitude DEFINATELY delivers to the usa. I got my order in ten days even, 100% germination, 90% survived.

my CC assess a fee of only 1%

I had the same problem. I was told I could use the prepaid CCs from walmart and I got one and wouldnt go through. I thought I got the wrong one so I went and got the other one and that didn't work either. Their wasn't any other cards to get at that point so I finally ended up getting one from the bank I think (making sure it could be used internationally of course). I was pretty pissed at the time and it costed me like 20$ in the end but I was really worried about my security after they had a hacker or something. Live and learn, still would rather do it that way than compromise my bank account security. Other than this part I am very happy with the transaction overall and was a little worried it was a 200$ order and I didn't get added security after I already spent the $ on the cards and wouldn't want a tshirt advertising I grow weed.

i order using walmart prepaid.

So even though they told me I can't make a purchase out of country it should still work. I wonder what I'm doing wrong, I'll figure it out.

WTF are you 21? or 18 to them? WHY??? idk