you need to download theme from account page, and reinstall it, or just replace custom.js file in js folder via FTP, or copy / paste via appearance / editor. It will work.
It’s working even for free, not just for $15 ;), though bugs sometimes occur.
It seems that I re-uploaded the old version, without the changes… Sorry!
You may re-download now, it’s all good now. If it’s not working again (and it must work now), leave me admin access to your site (mark reply as private), and I’ll do changes manually.