For each week that you have an active Build Order set to upgrade your Citadel's Stronghold to Tier 7, you need to have a minimum of 30 Visitors in your Citadel in order to make progress on the upgrade. If you don't reach the required 30 Visitors during a week, it will not allow any resources to be used for that upgrade. So, you need to reach this amount each week until the upgrade is completely built.
During a normal Build Cycle (between weekly Citadel Resets) you need a minimum of 5 Citadel Visitors in order to satisfy the requirement for weekly upkeep.
Hope that clears things up, and early congrats on Tier 7! Good luck!
EDIT: I thought your name looked familiar. I answered this question on another thread of yours from January too:
Citadel question
~ Sicariu
Leader of
No Sigil No Sleep
- founded 1 April 2013
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14-Mar-2018 02:35:49
- Last edited on
14-Mar-2018 04:21:23
by
Sicariu