FritzGerlach
I had a reset this Sunday 12 am UTC.
Before the first download was started, the counter remained on 'You have 30 downloads remaining in this time period which ends in 144h'.
After the first download started at Sunday 2:45 pm UTC: You have 29 downloads remaining in this time period which ends in 129h 15min.
So my next scheduled reset should be Saturday 12 am UTC, but acc. to your observation will actually occur on Sunday 12 am UTC. Let's see...
Edit on Saturday: 'You have 30 downloads remaining in this time period which ends in 144 hours'. So reset after 144 hrs.