Product Card whitelist request rejected... because of multibyte language?


Hi All.
today i used verification / approval tool and log is following:

INFO: Page fetched successfully
INFO: 15 metatags were found
INFO: twitter:card = product tag found
WARN: Not whitelisted

our site is Japanese commerce site and metatag is following:

<meta name="twitter:card" content="product" />
<meta name="twitter:data1" content="¥615" />
<meta name="twitter:label1" content="PRICE" />
<meta name="twitter:data2" content="チェーンブラシ" />
<meta name="twitter:label2" content="GENRE" />
<meta property="og:image" content="" />
<meta property="og:title" content="blablablablablabla" />
<meta property="og:type" content="product" />
<meta property="og:description" content="blablablablablabla" />
<meta property="og:url" content="" />
<meta property="og:site_name" content="ウェビック" />

all Images’ size are 160 x 160 or greater. but rejected. so i think multibyte language is the reason…
Can anyone help us in resolving this issue?