Also might be a sign of things running out and new model coming out.
You are lucky that your S1 works.
I received heavily used and semi-dead S1 from them.
All covered in dust, heavy smell of burnt electronics, a lot of dead chips - one blade shows 8 ASICs instead of 32.
It hashes only at around 120 GH/s and sometimes just stops hashing with beeping sound, needs power cycle to start again.
I paid 130 euros customs tax for this unit, and it would cost around 200 euros to ship it back to Bitmain and then I have to pay another 130 euros to customs for the replacement unit.
Just does not worth it.
So Bitmain sold me a dead unit and now just stopped responding to my messages.
1) screenshot?
2) what is your PSU - dead chips and rebooting are common signs that your PSU is a bit too weak (you need one rated 550W+ with at least 500W on the 12V rail to run properly)
1) here is the photo of my monitor screen
2) I run it with Corsair RM850. It's a pretty good PSU, I have another two of them powering two Ants S1 each without problems.
Actually I don't care much just was sort of disappointed when paid heavy customs tax for this unit only to find that it's all dusty and semi-burnt.