Marcelle

They responded within about half an hour.  It's quite scary how you just have to give them a serial number and bam, they've got you.  The language barrier wasn't that bad at all either.  For my specific case it took a day or two for her and the engineers to figure out what was wrong but once they figured it out they were able to give me the right version number.
I'm planning on getting a 2nd battery and just going to plonk the things onto Island mode.  No need to worry about all these little wattage leaks.

You're welcome, always happy to help where I can. So for the most part they will be doing the actual work but most people underestimate how much they rely on the suppliers for assistance as well, best of luck and really hope you come right!

@Psythank you so much for the response. Appreciate the feedback and advise. I actually assumed that the installer will also be doing the post-sales support.