Hi Caston.
In order to receive support for any bugs you may experience in the future, you’ll need to always be using the latest versions of all our plugins.
That being said, you should be able to download all prior versions of all our plugins since your membership began. Please visit your account’s Downloads page to check them out. I see Filter Bar 3.12.1 in there, which is probably what you’re wanting for the time being.
Let me know if you need anything else.
Thank you.