I wanted to switch unions in order to be in a party with my friends! But I'm not sure if I should because on top of making me spend 100 Gems (A Hefty Price) It makes me lose my Weekly and Monthy Lux Count. So my question(s) is(are), What is Weekly/Monthly Lux Count and how do I check what it is currently
Lux is only tallied weekly, not monthly.
You can view this on your profile:
What your end rank is will be calculated into a letter grade based on how well you did compared to other players in your Union. (A through E in the English release was S, followed by A through D in Japan.) “A” Rank is always roughly the top 10,000 players in each Union.