Hi Luca,
Thanks for coming back with this, and glad the "Check database" button sorted your site.
1. Agreed, and done. The account block sat between "how am I doing" and "what do I promote with", which is the wrong place for a form filled once, so it now closes the page, under the link tools and the banners. A partner who has not activated the program yet still finds it at the top, since nothing else is displayed to them until then. It is in the 6.6.0 package, so downloading it again from your member area and installing it is enough to get it.
2. Payments by bank transfer already work today. The payout is made from the back end on the user page of the affiliate, and it only goes through a payment plugin if you pick one there, so a shop paying by transfer simply records the payment. What is missing is a place for your affiliate to give you their details, and you can add it yourself with a custom field.
Go to HikaShop > Display > Custom fields, create a new field on the table "user", set "Display in the frontend" to yes, and give it the name you want, for example IBAN. Add a second one as a dropdown if you want your affiliates to choose between PayPal and bank transfer, and a third for the BIC if your affiliates' countries need it. Your affiliates then fill them on the details page of their account, and you see the values on their user in your back end when it is time to pay them.
That way you ask for exactly the payment information your affiliates' countries require, rather than the one set of bank fields we would have to choose for everybody.