hi there, not sure you already solved your problem but if you didnt then when you downloaded the tailor tales plus version from itchio, you should also start this version cause the free version won't work with the plus content. It also means that your progress from free version will be "lost", even tho you should get it all unlocked in plus version.
After starting the plus version, make sure that itchio and plus version are updated and then check patreon for the latest password (beginning of every month there's a password). Then in game you write the password in the gift icon.
I hope this kinda helped you if you still needed