About ancestor module and eta-0 vouchers.

If I roll the bonus stats of ancestor module does the mastery level (of the module) go up too or not?

Does the eta-0 vouchers from intercept battle abyss will reset in december 4?

When Lava Citadel became available didnt reset my vouchers.

Its possible to farm the vouchers andsave them to buy the next colossi skin/costume in eta-0 shop?