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Hi @laconicsky,
The reason is that MailPoet’s CSS styles (responsible for hiding and showing these forms) are loaded only after the form is rendered on the page.
By default, these styles should be loaded in the page header before any content is rendered, ensuring that they are applied immediately (e.g., not showing the form sooner than configured).
If you use optimization plugins, it’s possible that they changed when those styles are loaded (e.g. to optimize page load), but also caused this issue.
Thanks Jan – all sorted now. Appreciate the fast response.