Different text size on different sites

Hello
Opening yet another thread here. I hope you will not think of us as too annoying!
Question one:
I have Enfold installed (license bought separately) on different sites, and curiously the text size (including menus and content text size) vares from one site to another: https://metafora-studio-arts.org/portfolio-item/art-school-barcelona-short-term-stays/ (small text size) and http://www.escuelaveranoarteterapia.org/portfolio-item/open-day/ (big text size). They have the same theme settings (I imported the theme) and the same wordpress version, same enfold version 4.5.4. What could the reason be?

Question two:
On the two sites I have portfolio entries which I have copies from one to the other (I copied shortcodes and imported the theme settings), but the font on the portfolio masonry is white on one (http://www.escuelaveranoarteterapia.org/portfolio-item/open-day/ – this is how I want it) and light grey on the other. (https://metafora-studio-arts.org/portfolio-item/art-school-barcelona-open-day/)
I cannot seem to find the reason.

Last question:
As I said above, I have several sites, each with Enfold installed and on a two of them I cannot seem to update from 4.4.1 to 4.5.4 which seems to be the newest version. When we go to theme update, we get a message saying “No Updates available. You are running the latest version! (4.4.1)” . Any ideas?