Documentation index for AI agents (llms.txt). Markdown versions of every page are available by appending .md to the page URL. The full corpus is at /llms-full.txt.

Invalid registration key error

When you are seeing this error in the registration popup—the version of Happyforms you installed might not match your current plan. Here’s how to fix it:

  1. Download your plan’s latest version of Happyforms from our site.
  2. On your WordPress admin dashboard, head to Plugins → Add New screen.
  3. Click the Upload Plugin button.
  4. Upload the zip file you downloaded in step 1.
  5. At the end of the upload, confirm you want to overwrite your current copy of Happyforms.
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