This suggests you've not added the Gymcatch Property to the site. Please revisit the Wix Embed instructions to ensure that step is complete.
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How to embed Gymcatch on a Wix website
This suggests you've not added the Gymcatch Property to the site. Please revisit the Wix Embed instructions to ensure that step is complete.
You may also be interested in:
How to embed Gymcatch on a Wix website