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This thread is resolved. Here is a description of the problem and solution.

Problem:
The client is experiencing issues with transferring the WPML site key to a new domain name, phagetherapygeorgia.eu, from the old site, caucasushealing.com. The client is unable to connect the key on the new site, encountering an error message 'wpml: Unable to register: Site key not matching'. Additionally, the site is running slow after the domain change.
Solution:
1. To resolve the 'Site key not matching' error and transfer the WPML site key to the new domain, you need to re-register the key. Re-registering the key will not affect your translations; it is only necessary to keep WPML updated and to access support and translation features.
2. If you are unsure where to find the option to re-register, navigate to the 'Plugins' section in your WordPress dashboard, then go to 'Add New', and you will find the 'Commercial' tab where you can manage your WPML registration.

Please note that this solution might be outdated or not applicable to your specific case. We highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If the issue persists, please open a new support ticket at WPML support forum for further assistance.

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This topic contains 6 replies, has 0 voices.

Last updated by alainL-22 1 month, 4 weeks ago.

Assisted by: Dražen.

Author Posts
August 23, 2025 at 8:37 pm #17342348

alainL-22

Background of the issue:
I installed WPML on a site called caucasushealing.com and decided to change the name of this website to phagetherapygeorgia.eu. I am trying to transfer WPML from the old site to the new one.

Symptoms:
I can't connect the key on the new site, and I'm stuck. The site is running very slow, and I can't even install the support. The error message is 'wpml: Unable to register: Site key not matching'.

Questions:
How can I transfer the WPML site key to the new domain?
Why is my site running slow after changing the domain name?
How can I resolve the 'Site key not matching' error?

August 25, 2025 at 6:37 am #17343837

Dražen
Supporter

Languages: English (English )

Timezone: Europe/Zagreb (GMT+02:00)

Hello,

Please follow next steps:

- In your website, go to Plugins -> Add New -> Commercial.
- Unregister WPML by clicking the unregister link.
- Then go to https://wpml.org/account/sites/.
- Delete the site key for old and new URL
- Then go back to Plugins -> Add New -> Commercial on your website.
- Click the register link and follow the wizard, register and it should work fine.

Let me know how it goes.

Regards,
Drazen

August 25, 2025 at 9:53 am #17344423

alainL-22

dear DRAZEN

Thank you for your kinf answer,
But as I work on the new website for a while, the main translations are on the new one, will I lose all the new translations if I do as you say ?

Thank you in advance
regards
Alain

August 25, 2025 at 10:06 am #17344487

Dražen
Supporter

Languages: English (English )

Timezone: Europe/Zagreb (GMT+02:00)

Hello Alain,

if you re-register key you will not lose any translation. License key is only needed to keep WPML updated, provide support and be able to WPML translation editor / automatic translation for translation, it will not cause any other changes to your website or WPML configuration.

Regards,
Drazen

August 25, 2025 at 10:59 am #17344872

alainL-22

Hello Drazen,

Please could you be more explicite ?
So sorry, nothing is clear to me, what is commercial? Where or how to load it ?

Thanks in advance for your help

regards

Alain

August 25, 2025 at 11:02 am #17344877

Dražen
Supporter

Languages: English (English )

Timezone: Europe/Zagreb (GMT+02:00)

Hello Alain,

Commercial is a tab if you follow structure I sent you will see it there: Plugins -> Add New -> Commercial tab on your website.

Please check image attached.

Regards,
Drazen

Add-Plugins-‹-test-—-WordPress-08-25-2025_01_02_PM.jpg
August 25, 2025 at 11:51 am #17345107

alainL-22

Hello Drazen,

This message to say thank you, my issue seems to be resolved, have a good day!!

regards

Alain

August 25, 2025 at 11:52 am #17345109

alainL-22

Thanks to Drazen, quick and efficient help