Hey Irakly,
I’m sorry we made a recommendation back in November of 2014 that isn’t holding up today.
We’ve released a good deal of new features between the blog post announcing the release of LifterLMS 1.0.3 (https://blog.lifterlms.com/version-1-0-3-now-available/) where we recommended this theme and today.
I apologize that we haven’t updated this blog post. And I also apologize for not even being aware of it. I’ll make sure that blog post gets updated to reflect the current state of LifterLMS and, today, it sounds like we shouldn’t be recommending this theme. Things change quickly on the internet. It’s hard to maintain compatibility. I have no idea what Moesia has done it the past 18 months and we shouldn’t be expecting their changes to stay in sync with ours.
As for your issue, it looks like Toolset Types is another plugin to add to our list of plugins with a known conflict that we currently cannot find a way to resolve. Take a look at our writeup on the issue at https://lifterlms.com/docs/select2-javascript-issues/. I’ve just added Toolset Types to the list of plugins.
The best thing we can do is either find a way to temporarily resolve the conflict which I’d be happy to work on for you if you are a LifterLMS Pro member, simply submit a support request OR you can reach out to the plugin developers and urge them to upgrade their dependencies as noted in the article.
Take care,