Hi Dylek,
Sad to hear that you faced this issue with our template. I just tried to upgrade JOOMLA version for JA Events template to J3.x, however, it works properly.
You can try again with these steps as below:
+ Download and install quickstart package JA Events for J31 here
+ Upgrade JA T3v2 System Plugin for J25 & J32 into version 2.7.1 by downloading and installing it from here
+ Upgrade JOOMLA version 3.2.7 and click Purge Cache button
+ Upgrade JOOMLA version from 3.2.7 into 3.3.6 and click Purge Cache button
+ Once done, click Clean Cache from admin area
Now, you will have JA Events Template runs with JOOMLA version 3.x. Let me know if it helps