[Waiting for user feedback] Unable to register: Site key not matching
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Our wait time is higher than usual, please make sure you are meeting the minimum requirement - https://wpml.org/home/minimum-requirements before you report issues, and if you can take a look at current Known Issues - https://wpml.org/known-issues/. Thank you.
Thank you for contacting WPML Support. These types of issues usually happen when the WPML is not registered properly on your site. To fix this issue, could you please delete the existing site key and create a new one by following below steps:
1. Login to your WPML.org account >> Go to the Sites page: https://wpml.org/account/sites/
2. Delete the existing site key by pressing the little trash icon.
3. Login to your site and go to the Dashboard >> Plugins >> Add new > Commercial tab and click the Unregister WPML from this site link if that link exists.
4. Then click the Register WPML link.
5. Click the Get a key for this site link (screenshot attached).
6 It will generate the Key for your site and you can also assign the credits using that popup.
7. Copy the key, and paste it back into the input box, and press the Register button.
8. Then, please take a backup of your site and update the WPML plugins.
Please let me know if this resolves the issue or if you need further assistance with this issue.