Hello Luca,
I am glad you like AxCrypt!
A 30 day trial of AxCrypt Premium is included and you can start it at any time from the AxCrypt app.
After your Premium trail subscription expired, AxCrypt will convert your AxCrypt account subscription into Freemium.
If you want to continue our Premium subscription, then you have to purchase again. With out user’s interaction, AxCrypt will not renew your subscription automatically.
After your Premium Subscription expiration, You are able to open/decrypt your AxCrypt Encrypted(AES 256 bit) Files. But you will no longer to access the premium features.
For more information about features, please check our pricing page: https://forum.axcrypt.net/pricing/.