Hello AndrĂ¡s
Thank you for your advice on the issue I mentioned.
There appears to have been a couple of things incorrectly set up on the site causing the problem, but none of them relating to your plugin.
You pointed me in the right direction with some links pointing to http and others pointing to https thanks. That was indeed the case. Also, the link being used to ‘add an event’ wasn’t using wwww, and that seemed to cause a problem too.
Thanks again for your time.
Regards
Ash