I've recently purchased subj (3rd of August), yesterday i've installed it, printed about 20 pages and turned it off. Today it just does not answer to any of querries either from PC or smartphone. Printer status monitor says that it's waiting for printer to respond.
When I try to print the Configuration Page (by holding WPS button), it tries to print it, but fails to grab paper sheets, then power LED goes off and green LED below exclamation mark lights up for minute or so and goes off and power LED goes back on.
I've got Ubuntu and can not do anything described in the manual, because it involves Windows only utilities.