Title: Receive Authentication Failed Error
Last modified: October 6, 2021

---

# Receive Authentication Failed Error

 *  Resolved [rimmeym](https://wordpress.org/support/users/rimmeym/)
 * (@rimmeym)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/)
 * I had Zettle integrated and working properly with my site, and then somehow the
   plugin went away. I see this happen occasionally with other plugins also. I reinstalled
   the Zettle plugin and receive an Authentication Failed error after completing
   Step 2 and entering my API key. I do not have the WooCommerce PayPal Payments
   plugin installed. WooCommerce does have a Paypal standard option and I have tried
   disabling this prior to Zettle authentication. The Zettle authentication fails
   with the same error.
 * Help is appreciated.

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Support [Syde Joost](https://wordpress.org/support/users/joostvandevijver/)
 * (@joostvandevijver)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/#post-14946248)
 * Hello [@rimmeym](https://wordpress.org/support/users/rimmeym/)
 * When you get stuck on the onboarding process and retrying the process only gets
   you stuck at the same point, you will probably need to clear up the Zettle DB
   entries so the onboarding can be started as a clean attempt.
 * The issue that you get stuck on 2/6 of the synchronization can be fixed by removing
   the DB entry `woocommerce_zettle_settings` in the `wp_options` database. You 
   can do this by accessing your database via a plugin like WP Data Access or any
   other tool that allows you to access and correct the WP database.
 * Let me know if this works for you.
 * Kind regards,
    Joost`
 *  Thread Starter [rimmeym](https://wordpress.org/support/users/rimmeym/)
 * (@rimmeym)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/#post-14948220)
 * Hi Joost,
    Unfortunately that did not solve the problem. I removed the woocommerce_zettle_settings
   DB entry, tried to reauthorize, and receive the same error. Help is appreciated.
 *  Plugin Support [Syde Joost](https://wordpress.org/support/users/joostvandevijver/)
 * (@joostvandevijver)
 * [4 years, 8 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/#post-14950483)
 * Hello [@rimmeym](https://wordpress.org/support/users/rimmeym/)
 * did you first uninstall the plugin before you removed the DB entry? This might
   be best to have a clean install from scrap.
 * If you want us to take a closer look, you might want to install a staging site
   for us to take a closer look. If you don’t want to share details on this public
   platform, you can always open a service desk ticket with us via these instructions:
   
   [https://zettle.inpsyde.com/docs/request-support/](https://zettle.inpsyde.com/docs/request-support/)(
   please add the URL to this thread, so we can continue the investigation)
 * Let me know how you want to proceed.
 * Kind regards,
    Joost
 *  Plugin Support [Syde Joost](https://wordpress.org/support/users/joostvandevijver/)
 * (@joostvandevijver)
 * [4 years, 7 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/#post-15017605)
 * closing thread due to no activity

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Receive Authentication Failed Error’ is closed to new replies.

 * ![](https://ps.w.org/zettle-pos-integration/assets/icon-256x256.png?rev=2694076)
 * [PayPal Zettle POS for WooCommerce](https://wordpress.org/plugins/zettle-pos-integration/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/zettle-pos-integration/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/zettle-pos-integration/)
 * [Active Topics](https://wordpress.org/support/plugin/zettle-pos-integration/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/zettle-pos-integration/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/zettle-pos-integration/reviews/)

 * 4 replies
 * 2 participants
 * Last reply from: [Syde Joost](https://wordpress.org/support/users/joostvandevijver/)
 * Last activity: [4 years, 7 months ago](https://wordpress.org/support/topic/receive-authentication-failed-error/#post-15017605)
 * Status: resolved