Hi there Ian,
Thanks for getting in touch and sorry to hear about this issue. I’ll try to help you out on this!
First of all, Can you please follow the steps described in our Testing for conflicts guide? This way we can see if this is a problem in our plugin or a conflict with the theme or other installed plugins.
It will also be great if you can access your server error log, as there might be some clue in there. If you are not sure about where to look for them, just drop a line to your hosting company asn I’m sure they will point you in the right direction.
Please let me know about your findings,
Best,
Nico