Hi – I’m sorry you’re hitting difficulties. The steps we normally recommend as a starting point are:
- Ensure your Modern Tribe plugins are up-to-date
- Deactivate all non-Modern Tribe event plugins
- Switch to a default and unmodified theme such as Twenty Thirteen
- Test to see if the problem still occurs
- If it has been resolved, start reactivating everything one-at-a-time – checking at each stage to see if the problem has returned
This is a great way of pinning down any conflicts that might be present.
I did take a quick look at your site and noticed that the response for a search that ought to have returned results was a 500 internal server error – so it could well be the case that there is a conflict and the above steps might help to reveal this.
Let us know how you get on!