Is all this worth it?
To be fair you knew you were buying a cheap press and while it is annoying that the time is wildly out, it would not take that much to work out what you need to set it the press at to get the correct time. Once that has been worked out then you have what you desired, a cheap heat press to do whatever it is you want it to do.
I appreciate the frustration, but you can not expect something of Adkins quality at a bargain basement price.