Could it be because meta tag is used in this format:
<meta name="monetization" content="paymail">
And not like this as shown in developer guide:
<meta name="monetization" content="paymail" />
Could it be because meta tag is used in this format:
<meta name="monetization" content="paymail">
And not like this as shown in developer guide:
<meta name="monetization" content="paymail" />