Pop-up window size is being stripped out when I save the page

Is this a text link you are entering in the following format?

<a href="https://cubecolour.co.uk/wp" class="popup" data-height="300" data-width="300" data-scrollbars="0" alt="my alt text">Link Text</a>

Where are you entering this? Is it in the WordPress text or visual editor, or is it within an input field of WooCommerce or another specific plugin? If it is the latter, which plugin is it and where is the field you are entering this?

Thanks for the quick response! That’s the code I am entering yes. It’s being added to a Woocommerce product, inside the product ‘Add-ons’ (which is a Woocommerce plugin).

Here’s the link to the page >https://109.199.123.118/~marylove/index.php/product/noora-guest-pack/

The pop-up link is underneath ‘Personalised colour scheme’ and is labelled ‘colour chart’.

Thanks

It looks like the plugin that provides the field you are adding this to is probably stripping this out. Is it this one? https://www.woothemes.com/products/product-add-ons/ If so it is a commercial add-on & I can’t check it out as I don’t have access to the code to have a look at it.

I think you need to ask that plugin’s developer whether it is stripping out this data and if so whether it is possible to prevent it from stripping it out.

Ok I’ll give that a whirl. Thanks so much for your speedy help. I really appreciate it!