Yes, exactly.
I tried also to flash the two single zip in the jazzespresso thread on the S-Pen Air, prepared by Civato as well.
Same results.
I'd like to avoid to try a full wipe, so is there anything else I could do?
No don't do like this. First, go to Civato's ROM thread, downlad ROM for your device (make sure you are downloading right model of your tablet version).
Civato's ROM has aramo installer, means you need to install ROM first, and reboot your tablet..do all setup and then finally reboot back in to recovery and install Aircommand in Aramo install option.
in order to get fully fanctional Spen Air, I would recommend to do full wipe, so that you will avoid all strange issues.
By the way, this "Note 3's S-Pen Air (with Air Command Feature) for Note 8" thread is development thread which I started way back, but once all spen air stuff finalized, it is incorporated into Civato's ROM.