Title: Your key is not valid (code: 500)
Last modified: September 15, 2022

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# Your key is not valid (code: 500)

 *  Resolved [sourceduprieure](https://wordpress.org/support/users/sourceduprieure/)
 * (@sourceduprieure)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/your-key-is-not-valid-code-500/)
 * Hi,
 * I signed up for the 1-1000 plan and when I installed the activation key, I got
   the error “Your key is not valid. Error validating your MailPoet sending service
   key, please try again later (code: 500).”. I followed all the steps to activate
   the key, I deleted and reinstalled, it didn’t work.
    Can you please help me?

Viewing 1 replies (of 1 total)

 *  [Elvira K.](https://wordpress.org/support/users/treibalen/)
 * (@treibalen)
 * [3 years, 8 months ago](https://wordpress.org/support/topic/your-key-is-not-valid-code-500/#post-16026709)
 * Hi there [@sourceduprieure](https://wordpress.org/support/users/sourceduprieure/),
 * Thanks for reaching out!
 * I’m sorry to hear that you’re having issues with key activation!
 * This can happen when there’s something preventing the key check from running 
   as expected. Do you have any security/caching plugins activated?
 * If so, can you please disable them and try again?
 * Also, can you please share your site’s URL so I could check the key?
 * Cheers!

Viewing 1 replies (of 1 total)

The topic ‘Your key is not valid (code: 500)’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Elvira K.](https://wordpress.org/support/users/treibalen/)
 * Last activity: [3 years, 8 months ago](https://wordpress.org/support/topic/your-key-is-not-valid-code-500/#post-16026709)
 * Status: resolved