Get the wiring sorted out and try semi again...once semi works, full auto will "automatically" work.
The hopups don't break from being used...they break from people reassembling their rifle and close the upper receiver down onto the lower without making sure that the barrel/hopup-unit is as far forward as possible. The "frame" of the hopup unit catches on either the nozzle or the top edge of the mechbox and snaps off. No offense to your competency...just internet-guessing.
When you get to your max frustration limit...do yourself a favour and take it to a local gun-doc.
Best of luck with it.
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