Hey there, Peter! thanks for getting in touch and sorry for the issue here. Let’s see if we can pin down what’s happening together. 🙂
First off, I want to make sure you are using the latest version of all the plugins. Are you currently using The Events Calendar 3.9.1, WooTickets 3.9.2 and WooCommerce 2.3.5?
Secondly, I think your question about a possible conflict is totally valid. Will you please run through the steps outlined in this guide? Then, let me know if you see a difference when all other plugins are deactivated and a default WordPress theme are active.
Let’s start there and see what we find before getting any deeper.
Cheers!
Geoff