Hi David,
How can I be sure all data is downloaded?
Can you check your upload services, i.e. WU, PWS... and see if that is up to date?
I do not store data anywhere at home.
Can you activate the Custom export - FTP Current data export of realtime.txt and wflexp.json? then you would have the current data.
Should everything be uploaded to whatever site I am pushing to and the idea of the memory on logger is if things get disconnected for a while the memory is there so data is not missed?
Yes at whatever interval you have set. However not sure if all your upload sites allow for catch up - WU, PWS and WOW do.
If I just change the Archive Interval to 10 minutes will I really lose anything?
It would erase all the logged data the same as other Davis loggers. You would have no access for catch up of that erased historical data, i.e. CumulusMX download archive data at restart, but you are not using that anyway.
Enjoy,
Paul