I doubt ECU Exchange will answer the phone but I’ve never tried. Did you send it off to them and have questions or just want to ask them questions to see if you can determine if it needs to be gone through? Of it’s the latter I can tell you it won’t hurt to just send it as pretty much everyone that sends their to them get the power supply and other end of life parts replaced as they are noisy or not up to spec.
If it’s your primary mode of transport then I would highly suggest you just buy a spare. I had three at one point but sold one with a harness as it didn’t make any sense to have three.