Title: ISBN
Last modified: April 4, 2018

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# ISBN

 *  Resolved [brianchristensen](https://wordpress.org/support/users/brianchristensen/)
 * (@brianchristensen)
 * [8 years, 1 month ago](https://wordpress.org/support/topic/isbn-3/)
 * Is it ISBN 10 or 13?
    Either way when I enter a number the ‘fetch’ dial keeps
   on spinning….thoughts?

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [Kemory Grubb](https://wordpress.org/support/users/w33zy/)
 * (@w33zy)
 * [8 years, 1 month ago](https://wordpress.org/support/topic/isbn-3/#post-10145887)
 * Hello Sir,
    Make sure that the option you have selected for `External Book API`
   is also checked in the corresponding option below that setting. Also make sure
   you have a corresponding API key entered.
 *  Thread Starter [brianchristensen](https://wordpress.org/support/users/brianchristensen/)
 * (@brianchristensen)
 * [8 years, 1 month ago](https://wordpress.org/support/topic/isbn-3/#post-10147154)
 * Thanks!

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘ISBN’ is closed to new replies.

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 * 2 replies
 * 2 participants
 * Last reply from: [brianchristensen](https://wordpress.org/support/users/brianchristensen/)
 * Last activity: [8 years, 1 month ago](https://wordpress.org/support/topic/isbn-3/#post-10147154)
 * Status: resolved