Hi @andyfarr,
That sounds like something might not be working correctly in the shortcode (is it this plugin?). Which shortcode are you using in the page to display the floorplan? I’ll see if I can take a closer look at how that works and we may be able to get the page working.
As background, this plugin uses WordPress’s core is_404() function to check whether to redirect to the homepage. If something redirects to the homepage, it means WordPress “thinks” it is missing or does not exist. So it may be important to fix that for best results.
Looking at the page you’ve linked, the floorplan is linked via an iframe at https://www.edgevenue.co.uk/seatreg. However that page doesn’t seem to exist, so is a 404.
Is that a page you created yourself? If not, it might be automatically generated by the SeatReg plugin, in which case it doesn’t seem to be working correctly.
Sorry, I should have investigated further before posting my previous message.
Looking at the code of the SeatReg plugin, it is hard-coded to link the floorplan shortcode to the home page url + the word “seatreg” (in the getRegistrationURL function). So it is something the plugin has created, rather than yourself.
As such, you will need to contact the author of that plugin to ask why that page is returning a 404. Normally I would expect such a page to return a 200 code if it is used for publicly displayed information.
Please feel free to link them to this page for reference. Let me know if any questions come up and I may be able to help.