OK, just to be clear.
(I just read that it doesn't save when you refresh)
I gained 800 Calcium.
I got new egg, used the Calcium.
Got the upgrades. Then I got a new egg.
I lost those upgrades. So am starting from the beginning again.
Is that how it is meant to be or should the calcium upgrades remain?
Yes, the button should restart your game in trader mode (which means you'll not produce anything, so you will need to trade).
The trader mode button should only be available when you unlocked the "Metropolis" badge. Is it the case?
they should be cumulative.