My friend has noticed that his Gen 3 inverter seems to reboot between 8-10am daily.
He sent me a video of it today.
https://youtube.com/shorts/vweZSnS8K00?si=oaaBkiQY_VxBws9f
Also gives him a weird solar generation spike. 
Anyone seen this?
the solar generation spike is probably the same issue that lots of other people have reported that the data in the app graphs shows unexplained fantasy spikes
get them to look at the meter data in the portal and see if there is a spike there, my guess is probably not, and its just a graphing issue. There is a ‘known issue’ on this
On the reboot, never heard of that before. Might be that there is something corrupted on one of the registers of the inverter, so worth trying to manually change ALL of the charge and discharge start and end times to a random value and then set back to 00:00
Also, check their internet router. I have heard of some people’s router doing a reboot every day which causes the devices to have to reconnect
I'd suggest they check the portal > remote control page > log and see of the server is firing a restart request or if it is purely a local inverter thing going on.