Hi Cobus
I have actually experienced the exact same issue. Noticed it from around the 15th of July.
Symptoms were Gaps in the daily data on the Historic view, and then I noticed the time was resetting to an hour ahead of current.
I will go try this on my system too.
PS; chatting to the tech support at SolarMan, they are able to batch upload the missing data from your Inverter to SolarMan app, in case you want to fill those gaps