Here are some useful pages that might help you:
If you still need help after looking at the above sections, you can contact me via the form below.
I’d be happy to look at your request personally.
Only in case the above support form doesn't load, please contact me at the email below.
Don't forget to include your purchase confirmation (the Unity Invoice number like "IN0123456789", or the itch.io email) if you're asking for support, otherwise I won't be able to elaborate your request. Thanks for the collaboration!
-> support at febucci dot com