I set up the custom invoices. It is something that has changed with the newer updates.

I don't seem to have "Custom form styles' as an option

Ok I must be looking in the wrong place. I have tried Chrome, Safari & Firefox all incongnito.I have also tried on a different device and each time get the same...

I want to update the look of my invoice. When I go to 'Customise look and feel' under settings, I get the following error:We're sorry, we can't find the page yo...