I would still have 4 euro something above because I have paid only with gift vouchers. But I deleted my account because I do not want it anymore. Is there anything happening because there was still money?
If you have deleted your account, then the money now belongs to Netflix
That stays in the account if you do not use it. If you can also activate the account, you will still get Netflix for about half a month
No, the money stays in the account. Your account will not be deleted, it's just disabled. For example, if you feel like Netflix in a year, then this balance will still be available.
This is stated in the terms and conditions of Netflix and everyone can read.