FWIW, today I received 4-layer boards from Germany.
Last week, I received an email about the 4 boards (of my 3 board) order failing the "Smart Test."
I emailed them on Wednesday asking for more information because I cannot see how my design would have failed manufacturing. (It's well within their stated capability.) One of the boards matches the report. The other two boards have WAY more shorts/faults than what the "Smart Test" reported. Also, none of the 3 boards match faults. The fourth board remains a mystery.
I never received a response. The boards were shipped. The thin paper envelope was torn open and the unprotected boards were damaged. (they were only wrapped in plastic, no cushion.)
Today, I sent another support request. Since, as one might imagine, I am not happy.
Still waiting for any response.
(This is my 2nd and last order with Aisler.)