Yes, after some emails back and forth it was today that I heard they agree to my offered solution: they pay me the full 399.65mbtc outstanding balance, but in increments of 2000 euro per month. I had offered this myself cause I don't care too much about having to wait a little longer, as long as I know for sure I will get my full balance. And since I don't see Buff going bankrupt in the next 8 months (they are growing and their parent company is entering the Nasdaq) I am convinced I will receive the full balance eventually.
Tomorrow, the 3rd of September, they will pay the first installment to a BTC address of my choosing. I will close this topic tomorrow and remove the ongoing flags and trust ratings against users Buf88 and eGoldgg after I have received these funds. I will then also remove all posts regarding this case from the normal Buff topic and also won't post in that topic anymore at all, unless of course Buff fail to meet their monthly installment payments at some point.

Thank you all for your support in this case. I am happy to say that Buff afterall are not thieves, they just made a very bad judgement call but corrected it now. Also another reminder that you should stand up for yourself and fight for your right and in many cases justice will come.