Hello pawelm,
first of all I apologize for the late reply.
To answer your questions, updates can be found here.
There are currently no plans to adjust the unpaid milestones duo to the volatility in crypto valuations.
Milestone one has been implemented and we are working towards fulfilling Milestone #2 which is getting closer to its approval
Additionally I will try to get my hands on extra information, but I need to discuss with LuxTag core first.