HikaSubscription tutorial

-- HikaShop version -- : 4.6.1
-- HikaSerial version -- : 4.0.1
-- Joomla version -- : 4.2.2
-- PHP version -- : 7.4

I need to create a subscription as follows:
I have a video course with multiple files that will need to be renewed / purchased 1 file per week
(eg. file1, file2 ..) with recurring payments.
I followed the guides of HikaSubscription and AcyMailing.
I created the product, the subscription and the plan (with files) associated to the product, I configured AcyMailing (there I don't see the possibility to add files to the emails) and here nothing happens, orders are not recreated, nothing works ...

Do you have a simple step by step guide / tutorial on how to set up this type of subscription?
Thank you!

License, of course. How do I give it to you, it is confidential data anyway ..