It's working!! and a little bit stucked in updating portfolio, I guess it will take a while...
BTW, if I switch to normal when I started server mode... the data gets lost? Maybe would be good letting finish a server iteration first... How can I switch between modes? Ty in advance!

Just hit F5 i assume its already finished. The season part takes most of the first time. You can observe the log it its states done.
You can switch from server mode to normal mode without losing data. It both uses the same set of files.
On Windows:
normal mode:
docker run --rm -it -v C:\Temp\:/app/store -p 8050:8050 --name splinterlands-statistics gamerbeaker/splinterlands-statistics:latestFor server mode
docker run --rm -it -v C:\Temp\:/app/store -p 8050:8050 --name splinterlands-statistics gamerbeaker/splinterlands-statistics:latest -s