Welp...got tired of trying to figure out why WatchPower would work for weeks and then all of a sudden stop. I linked it back to the handshake between WP and the unit, something changed/or got corrupted in the unit... Serial # or something and WP cannot determine that it's a MPP All in one. The WP's included CommTool sees the unit, but WP itself will not confirm and connect to it.
Solution: I bought a Raspberry Pi4 Kit and a 32G Micro SD and purchased the Solar Assistant Software, flashed it to the Micro SD card ...followed the instructions as was up and running in no time. I have to admit, I really like the SA software a lot, especially the history and graphs.