Welcome to the site!
A couple quick comments...
Most likely, your coraline algae will bleach out due to the transit time. It's looking paler now, but will probably be white within a couple weeks. No harm... it'll come back just fine in time. No need for calcium right now since it's a new tank, but over time you'll want to keep an eye on the levels. Anything over 380 ppm
will keep your coraline growing strong.
Salinity - are you testing with a swing-arm hydrometer or refractometer? A swing-arm hydrometer is tough to get consistent readings on, so if that's what you're using that could be your problem. You've either got water that isn't mixed up yet (doubt it) or bad readings. I'd add more salt (assuming there's nothing living in the tank - adding salt directly to a tank is normally a no-no) anyway because either reading you have is still low. 1.024-1.026 is a better range to shoot for.
I wouldn't worry about pH for now. It's going to take some time to stabilize and will swing all over the place during the cycle.